definition of side by The Free Dictionary




1. Mathematics

a. A line bounding a plane figure.

b. A surface bounding a solid figure.


a. A surface of an object, especially a surface joining a top and bottom: the four sides of a box.

b. A surface of an object that lies on the left or right of that object as viewed from the front or back: From the shore, I watched my friends dive off the side of the boat.

c. Either of the two surfaces of a thin, flat object: the front side of a piece of paper.


a. The part within an object or area to the left or right of the observer or of its vertical axis.

b. The left or right half of the trunk of a human or animal body: always sleeps on his side; a side of beef.


a. The space immediately next to someone: stood at her father’s side.

b. The space immediately next to something. Often used in combination: courtside; dockside.

5. One of two or more contrasted parts or places within an area, identified by its location with respect to a center: the north side of the park.

6. An area separated from another area by an intervening feature, such as a line or barrier: on this side of the Atlantic; the district on the other side of the railroad tracks.


a. One of two or more opposing individuals, groups, teams, or sets of opinions.

b. One of the positions maintained in a dispute or debate.

8. A distinct aspect: the shy side of his personality.

9. Line of descent: my aunt on my mother’s side.

10. sides

a. An incomplete script that shows the lines and cues of a single performer only.

b. An incomplete script that shows only what is to be filmed on a specific day or shoot.

11. Chiefly British In billiards, the spin given to a propelled ball by striking it off center.


1. Located on a side: a side door.

2. From or to one side; oblique: a side view.

3. Minor; incidental: a side interest.

4. In addition to the main part; supplementary: a side benefit.

v. sid·ed, sid·ing, sides

1. To provide sides or siding for: side a frame house with aluminum.

2. To be positioned next to: a couch that is sided by low tables.


To align oneself in a disagreement: sided with the conservatives in Congress; siding against the bill.

Phrasal Verb:

side out

Sports In volleyball, to gain the right to serve by winning a volley served by the opposing team.


on the side

1. In addition to the main portion: coleslaw on the side.

2. In addition to the main occupation or activity: did some consulting work on the side.

side by side

Next to each other; close together.

this side of Informal

Verging on; short of: shady deals that were just this side of criminal.

[Middle English, from Old English sīde.]

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.




1. a line or surface that borders anything

2. (Mathematics) geometry

a. any line segment forming part of the perimeter of a plane geometric figure

b. another name for face13

3. either of two parts into which an object, surface, area, etc, can be divided, esp by a line, median, space, etc: the right side and the left side.

4. either of the two surfaces of a flat object: the right and wrong side of the cloth.

5. a surface or part of an object that extends vertically: the side of a cliff.

6. (Anatomy) either half of a human or animal body, esp the area around the waist, as divided by the median plane: I have a pain in my side.

7. the area immediately next to a person or thing: he stood at her side.

8. a district, point, or direction within an area identified by reference to a central point: the south side of the city.

9. the area at the edge of a room, road, etc, as distinguished from the middle

10. aspect or part: look on the bright side; his cruel side.

11. one of two or more contesting factions, teams, etc

12. (Printing, Lithography & Bookbinding) a page in an essay, book, etc

13. a position, opinion, etc, held in opposition to another in a dispute

14. line of descent: he gets his brains from his mother’s side.

15. (Broadcasting) informal a television channel

16. (Billiards & Snooker) billiards snooker spin imparted to a ball by striking it off-centre with the cue. US and Canadian equivalent: English

17. slang Brit insolence, arrogance, or pretentiousness: to put on side.

18. on one side set apart from the rest, as provision for emergencies, etc, or to avoid muddling

19. on the heavy side tending to be too heavy

20. on the side

a. apart from or in addition to the main object

b. as a sideline

c. US as a side dish

d. bit on the side See bit111
21. side by side

a. close together

b. (foll by with) beside or near to

22. take sides to support one group, opinion, etc, as against another


23. being on one side; lateral

24. from or viewed as if from one side

25. directed towards one side

26. not main; subordinate or incidental: side door; side road.


27. (usually foll by: with) to support or associate oneself with a faction, interest, etc

28. (Building) (tr) to provide with siding or sides

29. (tr; often foll by away or up) dialect Northern English to tidy up or clear (dishes, a table, etc)

[Old English sīde; related to sīd wide, Old Norse sītha side, Old High German sīta]

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014



n., adj., v. sid•ed, sid•ing. n.

1. one of the surfaces forming the outside of something, or one of the lines bounding a geometric figure.

2. either of the two broad surfaces of a thin flat object, as a door.

3. one of the lateral surfaces of an object, as opposed to the front, back, top, and bottom.

4. either of the two lateral parts or areas of a thing: the right side and the left side.

5. either lateral half of the body, esp. of the trunk.

6. the dressed, lengthwise half of an animal’s body used for food.

7. an aspect; phase: all sides of a problem.

8. region, direction, or position with reference to a central line, space, or point: the east side of a city.

9. a slope, as of a hill.

10. one of two or more contesting teams or groups: Our side won the baseball game.

11. the position, course, or part of a person or group opposing another: I am on your side.

12. line of descent through either parent.

13. the space immediately adjacent: Stand at my side.

14. a side dish, esp. in a restaurant.

15. Usu., sides. pages of a script containing only the lines and cues of a specific role.

17. Chiefly Brit. affected manner.


18. being at or on one side.

19. coming from or directed toward one side.

20. subordinate; incidental: a side issue.


21. side with (or against), to support (or oppose), as in an argument or other dispute.


1. on the side, in addition to some primary thing.

2. take sides, to support one participant in a dispute rather than another.

[before 900; Old English sīde, c. Old Frisian, Old Saxon sīde, Old High German sīta, Old Norse sītha]

Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

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