1. The act of noting or observing; perception or attention: That detail escaped my notice.
2. Respectful attention or consideration: grateful for the teacher’s notice.
3. A written or printed announcement: a notice of sale.
a. A formal announcement, notification, or warning, especially an announcement of one’s intention to withdraw from an agreement or leave a job: gave my employer two weeks’ notice; raised the price without notice.
b. The condition of being formally warned or notified: put us on notice for chronic lateness.
5. A printed critical review, as of a play or book.
2. To perceive with the mind; detect: noticed several discrepancies.
a. To comment on; mention.
b. To treat with courteous attention.
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. the act of perceiving; observation; attention: to escape notice.
2. take notice to pay attention; attend
3. take no notice of to ignore or disregard
4. information about a future event; warning; announcement
5. a displayed placard or announcement giving information
6. advance notification of intention to end an arrangement, contract, etc, as of renting or employment (esp in the phrase give notice)
7. at short notice with notification only a little in advance
8. at two hours’ notice with notification only two hours in advance
9. chiefly Brit dismissal from employment
10. favourable, interested, or polite attention: she was beneath his notice.
11. (Theatre) a theatrical or literary review: the play received very good notices.
12. to become conscious or aware of; perceive; note
13. to point out or remark upon
14. to pay polite or interested attention to
15. to recognize or acknowledge (an acquaintance)
[C15: via Old French from Latin notitia fame, from nōtus known, celebrated]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
n., v. -ticed, -tic•ing. n.
1. information, warning, or announcement of something impending; notification: to give notice of one’s intentions.
2. a written or printed statement conveying such information or warning: to post a notice.
3. a notification by one of the parties to an agreement, as for employment, that the agreement will terminate on a specified date: She gave her employer two-weeks’ notice.
4. observation, attention, or heed; note: to take notice of one’s surroundings.
5. interested or favorable attention: singled out for notice.
6. a brief written review or critique of a book, play, etc.
7. to become aware of or pay attention to; take notice of; observe.
8. to mention or refer to; point out.
9. to acknowledge acquaintance with.
10. to give notice to; serve with a notice.
Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
Notice can be a noun or a verb.
A notice is a sign in a public place which gives information or instructions.
There was a notice on the lift saying it was out of order.
You do not use notice to refer to a short, informal letter. The word you use is note.
I shall have to write a note to Eileen’s mother to explain her hurt arm.
If you take notice of someone or something, you pay attention to them.
I’ll make her take notice of me.
Police officers taught residents to take notice of suspicious activities and unfamiliar cars and faces.
When someone does not pay any attention to someone or something, you can say that they take no notice of them or do not take any notice of them.
Her mother took no notice of her weeping.
They refused to take any notice of one another.
If someone becomes aware of something, you do not say that they ‘take notice of’ it. You say that they notice it.
I’ve noticed your hostility towards him.
He noticed two grey trucks parked near his house.
Collins COBUILD English Usage © HarperCollins Publishers 1992, 2004, 2011, 2012