bumper

Short definition from Wiktionary

Noun

1. 1
   Someone or something that bumps.
2. 2
   A drinking vessel filled to the brim.
3. 3
   Anything large or successful.
4. 4
   Parts at the front and back of a vehicle which are meant to absorb the impact of a collision; fender.
5. 5
   Any mechanical device used to absorb an impact, soften a collision, or protect against impact.
6. 6
   A bouncer.
7. 7
   A side wall of a pool table.
8. 8
   A cylindrical object used (as a substitute for birds) to train dogs to retrieve.
9. 9
   A short ditty or jingle used to separate a show from the advertisements.
10. 10
    A covered house at a theatre, etc., in honour of some favourite performer.
11. 11
    A woman's posterior, particularly one that is considered full and desirable.
12. 12
    An extra musician (not notated in the score) who assists the principal French horn by playing less-exposed passages, so that the principal can save their 'lip' for difficult solos. Also applied to other sections of the orchestra.
13. 13
    An object on a playfield that applies force to the pinball when hit, often giving a minor increase in score.
14. 14
    A cigarette butt.
15. 15
    In National Hunt racing, a flat race for horses that have not yet competed either in flat racing or over obstacles.
16. 16
    A shoulder button on a gamepad.
17. 17
    Synonym of gutter guard (“rail to prevent a ball from rolling into the gutter”).

Adjective

1. 1
   Wonderfully large; (as if) filled to the bumpers at the top of a silo.

Verb

1. 1
   To drink from the vessels called bumpers.