A lockpicking tool in the form of a key of the type generally used to open a lock, on which all pins have been cut down to the lowest position, so that striking this key sharply with a hammer while applying turning force at just the right instant after the impact will 'bump' open a lock.

plural of bump key

(vulgar, slang) To have sexual intercourse.

(UK) A supper given in celebration of the making of a ‘bump’ by a college boat.

Alternative spelling of bumpoff.

(informal) A spike in a politician's popularity following an appearance with, or promotion by, comedian Stephen Colbert.

A goosebump, especially when caused by anything ghostly or ghastly.

Synonym of Jersey barrier (“barrier used to separate lanes of traffic or to block traffic”)

A beating given to someone on their birthday, typically of a number corresponding to their age.

present participle of bump and grind