磕

死磕

sǐ kē

(coll.) to fight to the death

磕碰

kē pèng

to knock against

磕磕

kē kē

(onom.) knocking

磕磕巴巴

kē kē bā bā

stammering

磕磕绊绊

kē ke bàn bàn

bumpy (of a road)

磕碜

kē chen

(dialect) ugly; unsightly; shabby

磕糖

kē táng

(slang) to revel in the sight of one's favorite couple being affectionate

磕膝盖

kē xī gài

(dialect) knee

磕头

kē tóu

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

磕头如捣蒜

kè tóu rú dǎo suàn

lit. to kowtow like grinding garlic (idiom)