Bum"per (?), n. [A corruption of bumbard, bombard, a large drinking vessel.]
1.
A cup or glass filled to the brim, or till the liquor runs over, particularly in drinking a health or toast.
He frothed his bumpers to the brim.
Tennyson.
2.
A covered house at a theater, etc., in honor of some favorite performer.
[Cant]
© Webster 1913.
Bump"er (?), n.
1.
That which bumps or causes a bump.
2.
Anything which resists or deadens a bump or shock; a buffer.
© Webster 1913.