1. (indefinite) no thing; not anything, as of an implied or specified class of things: I can give you nothing.
2. no part or share: to have nothing to do with this crime.
3. a matter of no importance or significance: it doesn’t matter, it’s nothing.
4. indicating the absence of anything perceptible; nothingness
5. indicating the absence of meaning, value, worth, etc: to amount to nothing.
6. zero quantity; nought
a. not to concern or be significant to (someone)
b. to be not nearly as good as
8. have nothing to do with be nothing to do with to have no connection with
a. to have no engagements to keep
b. to be undressed or naked
c. informal to compare unfavourably with
10. in nothing flat informal in almost no time; very quickly or soon
11. nothing but not something other than; only
12. nothing doing informal an expression of dismissal, disapproval, lack of compliance with a request, etc
13. nothing if not at the very least; certainly
14. nothing less than nothing short of downright; truly
15. there’s nothing for it there’s no choice; there’s no other course
16. there’s nothing like a general expression of praise: there’s nothing like a good cup of tea.
17. there’s nothing to it it is very simple, easy, etc
a. to regard as routine, easy, or natural
b. to have no compunction or hesitation about
c. to have a very low opinion of
19. to say nothing of as well as; even disregarding: he was warmly dressed in a shirt and heavy jumper, to say nothing of his thick overcoat.
20. stop at nothing to be prepared to do anything; be unscrupulous or ruthless
Usage: Nothing normally takes a singular verb, but when nothing but is followed by a plural form of a noun, a plural verb is usually used: it was a large room where nothing but souvenirs were sold
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014