What is Drum ?
Drum is (noun) 1. a large round musical instrument which is hit with a stick He plays the drums in the band. 2. a large barrel or container shaped like a cylinder Oil drums were piled up in the corner of the yard. (verb) 1. to play on a drum 2. to hit something frequently He drummed his fingers on the table. to drum something into someone to make someone learn something My grandfather drummed it into me that I had to be polite to customers.
source: Easier English, Student Dictionary Upper Intermediate Level