drum

1 drum /ˈdrʌm/ noun
plural drums
1 drum
/ˈdrʌm/
noun
plural drums
Britannica Dictionary definition of DRUM
1 
[count] : a musical instrument that is made with a thin layer of skin or plastic stretched over the end of a round frame and that is played by hitting the skin or plastic with sticks or with your hands
— see also kettledrum, snare drum, steel drum
2 
[noncount] : the sound that is made when something hits a surface over and over again
3 
[count]
a  : a large usually metal container for liquids
b  : a machine or part of a machine that is shaped like a cylinder

beat/bang the drum for

: to say or write things that strongly support (someone or something)
2 drum /ˈdrʌm/ verb
drums; drummed; drumming
2 drum
/ˈdrʌm/
verb
drums; drummed; drumming
Britannica Dictionary definition of DRUM
1 
[no object] : to beat or play a drum or set of drums
2 
: to make a sound by hitting a surface over and over again
[no object]
[+ object]

drum into

[phrasal verb]
drum (something) into (someone)
: to force (something) to be learned by (someone) by repeating it over and over again

drum out of

[phrasal verb]
drum (someone) out of (something)
: to force (someone) to leave (a place or organization)

drum up

[phrasal verb]
drum up (something) also drum (something) up
: to get or create (support, business, etc.) through hard work and a lot of effort