From WordNet (r) 3.0 (2006):
drum
n 1: a musical percussion instrument; usually consists of a
hollow cylinder with a membrane stretched across each end
[syn: drum, membranophone, tympan]
2: the sound of a drum; "he could hear the drums before he heard
the fifes"
3: a bulging cylindrical shape; hollow with flat ends [syn:
barrel, drum]
4: a cylindrical metal container used for shipping or storage of
liquids [syn: drum, metal drum]
5: a hollow cast-iron cylinder attached to the wheel that forms
part of the brakes [syn: brake drum, drum]
6: small to medium-sized bottom-dwelling food and game fishes of
shallow coastal and fresh waters that make a drumming noise
[syn: drum, drumfish]
v 1: make a rhythmic sound; "Rain drummed against the
windshield"; "The drums beat all night" [syn: drum,
beat, thrum]
2: play a percussion instrument
3: study intensively, as before an exam; "I had to bone up on my
Latin verbs before the final exam" [syn: cram, grind
away, drum, bone up, swot, get up, mug up, swot
up, bone]