(n.) An act of respect; a downward movement by bending the knees\.

accost address bend bend the knee bend the neck bend to bending the knee bid good day bid good morning bob bob a curtsy bob down bow bow and scrape bow down bow the head bow to bowing and scraping cringe to crouch crouch before dipping the colors do homage do obeisance duck embrace exchange greetings fall down before genuflect genuflection greet greeting grovel hail hand-clasp handshake hello homage how-do-you-do hug inclination kiss kiss hands kneel kneel to kneeling knuckle to kowtow lift the hat make a leg make a reverence make obeisance making a leg nod nod to obeisance obsequiousness presenting arms prostration pull the forelock reverence salaam salutation salute say hello scrape servility shake shake hands smile smile of recognition squat standing at attention stoop submission submissiveness supination touch the hat truckle to uncover wave