敲边鼓

to back sb up / to support sb in an argument / (lit. to beat nearby drum)

to hit / to strike / to tap / to rap / to knock / to rip sb off / to overcharge

side / edge / margin / border / boundary / CL:個|个[ge4] / simultaneously

suffix of a noun of locality

old variant of 鼓[gu3]

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