(1) to kowtow (traditional greeting, esp. to a superior, involving kneeling and pressing one's forehead to the ground)
(2) also written 磕頭|磕头[ke1 tou2]
(1) to kowtow (traditional greeting, esp. to a superior, involving kneeling and pressing one's forehead to the ground)
(2) also written 磕頭|磕头[ke1 tou2]