kowtow

(kou-touˈ, kouˈtouˌ)

1. To kneel and touch the forehead to the ground in expression of deep respect, worship, or submission, as formerly done in China.
2. To show servile deference. See Synonyms at fawn¹.

1. The act of kneeling and touching the forehead to the ground.
2. An obsequious act.