羯鼓

double-ended skin drum with a narrow waist

Jie people, a tribe of northern China around the 4th century

ram, esp. gelded / to castrate / deer's skin

old variant of 鼓[gu3]

drum / CL:通[tong4],面[mian4] / to drum / to strike / to rouse / to bulge / to swell

drumming to make apricots flower, cf joke by Tang Emperor Xuanzhong 唐玄宗, playing the drum in apricot blossom