Bumper

1. n. Anything which resists or deadens a bump or shock; a buffer.
2. n. A cup or glass filled to the brim, or till the liquor runs over, particularly in drinking a health or toast.
3. n. A covered house at a theater, etc., in honor of some favorite performer.
4. n. That which bumps or causes a bump.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.