apex, crown of the head, top, roof, most, to carry on the head, to push to the top, to go against, to replace, to substitute, to be subjected to (an aerial bombing, hailstorm etc), (slang) to "bump" a forum thread to raise its profile, classifier for headwear, hats, veils etc
to bow to; to pay one's respects, (bound form) to extend greetings (on a specific occasion), to make a courtesy call, (bound form) (of a monarch) to appoint sb to (a position) by performing a ceremony, to acknowledge sb as one's (master, godfather etc), (used before some verbs to indicate politeness)