kowtow

v [I, Ipr] ~ (to sb/sth) be submissive, humble or respectful (to sb/sth) （向某人[某事物]）叩头, 磕头, 臣服: a refusal to kowtow (to the government's wishes on this issue) 拒绝屈从（於政府对这一问题的意旨）.

knuckle, knuckleduster, knucklehead, KO, koala, kobo, kohl, kohlrabi, kola, kook, kookaburra, kooky, kopeck (also kopek), koppie (also kopje), Koran, Koranic, Korea, Korean, kosher, koumiss, kph, kraal, kremlin, krill, kris, krona, krone, krugerrand, krypton, Kt, Ku-Klux-Klan, kudos, kukri, kumis (also kumiss, koumiss), kummel, kumquat, kung fu, kvass, kW (also kw), kwashiorkor,