look up any word, like the eiffel tower:
 
1.
A haggard, perpetually grumpy, good for nothing elderly woman.
Gertrude: "So Frank, did you hear about Walt's little doctor's visit? Seems the rectal examination made him a little bit squeamish. Let me tell you..."
Walt: "For Christ's sake! Shut up, you old bag, and grab me a cold one!"
by Nick D August 19, 2004
 
2.
grumpy old bat who doesnt do anything for anyone
Mrs keen, jeez your an old bag!
by Anonymous November 12, 2002
 
3.
There's no bag like an old bag, there's no bag I know...

Every hot young babe eventually in time becomes an old bag.
Most old bags belong to the bitchin' and moanin' (B&M) club.
by Jimbo Creamer July 25, 2010