Meaning of kē:
磕
to tap; to knock (against sth hard); to knock (mud from boots, ashes from a pipe etc); variant of 嗑[ke4]
Tā bù xiǎoxīn bǎ tóu kē zài mén shàng le.
他不小心把头磕在门上了。
He accidentally tapped his head against the door.
Tā bù xiǎoxīn zài mén shàng kē le yīxià tóu.
他不小心在门上磕了一下头。
He accidentally knocked his head against the door.
Tā xiǎoxīn de bǎ guǎnzi shàng de huī kē diào.
他小心地把管子上的灰磕掉。
He carefully knocked the ash off the pipe.
Tā yībiān zǒulù yībiān kē guāzǐ.
他一边走路一边磕瓜子。
He eats sunflower seeds while walking.