Chinese Dictionary

Usage of the character 磕

to tap
to knock (against sth hard)
to knock (mud from boots, ashes from a pipe etc)

variant of 嗑 (kè)

(coll.) to fight to the death

(onom.) knocking

(dialect) ugly; unsightly; shabby
(dialect) to humiliate; to ridicule

(slang) to revel in the sight of one's favorite couple being affectionate
to lap it up when one sees a couple whom one ships kissing or cuddling

to kowtow (traditional greeting, esp. to a superior, involving kneeling and pressing one's forehead to the ground)

to knock against
to bump into
to have a disagreement
to clash

(dialect) knee

stammering
stuttering
not speaking fluently

bumpy (of a road)
limping (of a person)

kètóurúdǎosuàn

磕头如捣蒜

[磕頭如搗蒜]

lit. to kowtow like grinding garlic (idiom)
fig. to pound the ground with one's head