Meaning of “care” - Learner’s Dictionary

care

verb uk us /keər/
IMPORTANT [ I, T ]

B1 to think that something is important and to feel interested in it or worried about it:

He cares deeply about the environment.
[ + question word ] I don't care how long it takes - just get the job done.
LOVE [ I ]

B1 to love someone:

Your parents are only doing this because they care about you.
I knew that Amy still cared for me.
I/he, etc couldn't care less informal

used to emphasize that someone is not interested in or worried about something or someone:

[ + question word ] I couldn't care less what people think.
Who cares? informal

B2 used to emphasize that you do not think something is important:

"Manchester United will be in the final if they win this match." "Who cares?"
Would you care for sth/to do sth? formal

used to ask someone if they want something or want to do something:

Would you care for a drink?
Would you care to join us for dinner?

(Definition of “care verb” from the Cambridge Learner’s Dictionary © Cambridge University Press)