1 [count] : a way of earning money : the money that someone needs to pay for housing, food, etc. — usually singular
His investments provide him with a good living. [=provide him with enough money to live well]
What do you do for a living? [=what is your job?]
He struggled to scratch/eke out a living as a farmer.
He earned a/his living as a cook. = He made a living by working as a cook.
2 [noncount] : a way of living
the challenges of city living
It's summertime, and the living is easy.