bag1 S1 W2 [countable]
a container made of paper, cloth, or thin plastic which usually opens at the top:
a paper bag
a plastic bag
a garbage bag
Don't leave your bag in the car.
a large bag that you use to carry your clothes etc when you are travelling:
Just throw your bags in the back of the car.
a garment bag
the amount that a bag will hold
a bag of popcorn
an insulting word for an old woman:
You silly old bag!
a lot of something [= plenty]:
a lot of somethingspoken especially British English
She's got bags of money.
No need to rush, we've got bags of time.
to leave a place where you have been living, usually after an argument:
We told her to pack her bags at once.
dark circles or loose skin under your eyes, usually because of old age or being tired
a person or animal who is too thin
certain to be won or achieved:
The governor's advisors believe the election is in the bag.
bags[plural] British English old-fashioned
10 old-fashioned informal
something that someone is not very interested in or not very good at:
Thanks but dancing is not really my bag.
11 British English
with all your possessions:
They threw her out of the house, bag and baggage.
the number of birds or animals that someone kills when they go hunting:
hunting[usually singular] British EnglishDSO
We had a good bag that day.