Meaning of "thing" in Essential English Dictionary

thing

noun uk /θɪŋ/

A1 used to mean an object without saying its name:

I need to get a few things in town.

A2 a fact or characteristic of someone or something:

The best thing about the holiday was the food.
a thing

B1 used instead of ‘anything’ in order to emphasize what you are saying:

I haven’t got a thing to wear.

used to refer to an idea or comment:

I just want to forget the whole thing.

used to refer to an activity or event:

Meeting Nina was the best thing that’s ever happened to me.
thing to do/say

something that is done or said:

What a silly thing to do.

(Definition of “thing” from the Cambridge Essential Dictionary © Cambridge University Press)