fill the bill

and fit the bill

to be acceptable. Jane: I need some string. Tom: Here's some twine. Will it fill the bill? I need cloth to make a shirt. This muslin ought to fit the bill.

fill the bill

Serve a particular purpose well, as in I was afraid there wasn't enough chicken for everyone, but this casserole will fill the bill , or Karen's testimony just fills the bill, so we're sure to get a conviction. This expression alludes to adding less-known performers to a program (or bill) in order to make a long enough entertainment. [First half of 1800s]

fill the bill

Informal

To serve a particular purpose.

Common Names:

Name	Pronounced	Usage
Gwyn	-	Welsh
Everard	-	English (Rare)
Beatriz	be-ah-TREETH (Spanish), be-ah-TREES (Latin American Spanish), be-a-TREES (Portuguese), be-a-TREESH (Portuguese)	Spanish, Portuguese
Polyxeni	-	Greek
Almira (1)	awl-MIR-ə	Literature
Fred	[fred]