Meaning of drum

Definition of drum

(noun) a musical percussion instrument; usually consists of a hollow cylinder with a membrane stretched across each end
the sound of a drum; "he could hear the drums before he heard the fifes"
a bulging cylindrical shape; hollow with flat ends
a hollow cast iron cylinder attached to the wheel that forms part of the brakes
(verb) make a rhythmic sound; "Rain drummed against the windshield"; "The drums beat all night"
study intensively, as before an exam; "I had to bone up on my Latin verbs before the final exam"

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