Noun

1. A musical percussion instrument; usually consists of a hollow cylinder with a membrane stretched across each end
2. The sound of a drum
3. A bulging cylindrical shape; hollow with flat ends
4. A cylindrical metal container used for shipping or storage of liquids
5. A hollow cast-iron cylinder attached to the wheel that forms part of the brakes
6. Small to medium-sized bottom-dwelling food and game fishes of shallow coastal and fresh waters that make a drumming noise

Verb

1. Make a rhythmic sound
2. Play a percussion instrument
3. Study intensively, as before an exam