- nod
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verb nodded, nodding (I, T)
1 to move your head up and down, especially in order to show agreement or understanding: I asked her if she was ready to go, and she nodded. | nod your head: Jane nodded her head sympathetically. | nod your approval/agreement etc: show your approval etc by nodding2 to move your head down and up again once in order to greet someone or give someone a sign to do something(+ at/to): The judge nodded at the foreman to proceed. | She nodded to us as she walked by.3 be on nodding terms(with)/have a nodding acquaintance(with) to know someone slightly or know a little about a subject: Burke was already on nodding terms with a number of senators. | a nodding acquaintance with local historynod off phrasal verb (I) to begin to sleep, when you do not intend to: I missed the movie because I'd nodded off. 2 noun1 (C) an act of nodding: The woman greeted us with a nod of the head. | give a nod: I showed the doorman my card and he gave a friendly nod.2 give sb the nod BrE informal to give someone permission to do something: We're waiting for the boss to give us the nod on this one.3 a nod's as good as a wink humorous used to tell someone that you have understood something, although it was said in an indirect way4 on the nod BrE informal by general agreement and without discussion: The chairman's proposals are usually passed on the nod.—see also: the land of nod land 1 (9)
Longman dictionary of contemporary English. 2004.