say it: HAM-ur
hammer is a noun and verb meaning "the part of a gunlock that strikes the percussion cap when the trigger is pulled". It carries 10 recorded senses.
the ossicle attached to the eardrum
a light drumstick with a rounded head that is used to strike such percussion instruments as chimes, kettledrums, marimbas, glockenspiels, etc.
a heavy metal sphere attached to a flexible wire; used in the hammer throw
a striker that is covered in felt and that causes the piano strings to vibrate
a power tool for drilling rocks
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for hammer come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.