drum

(noun) a musical percussion instrument; usually consists of a hollow cylinder with a membrane stretched across each end. Synonyms: membranophone, tympan.

(noun) the sound of a drum. Example: "He could hear the drums before he heard the fifes."

(noun) a bulging cylindrical shape; hollow with flat ends. Synonyms: barrel.

(noun) a cylindrical metal container used for shipping or storage of liquids. Synonyms: metal drum.

(noun) a hollow cast-iron cylinder attached to the wheel that forms part of the brakes. Synonyms: brake drum.

(noun) small to medium-sized bottom-dwelling food and game fishes of shallow coastal and fresh waters that make a drumming noise. Synonyms: drumfish.

(verb) make a rhythmic sound. Synonyms: beat, thrum. Examples: "Rain drummed against the windshield." "The drums beat all night."

(verb) play a percussion instrument.

(verb) study intensively, as before an exam. Synonyms: cram, grind away, bone up, swot, get up, mug up, swot up, bone. Example: "I had to bone up on my latin verbs before the final exam."