nodding
 點頭振動
 Nod, v. t. [imp. & p. p. Nodded p. pr. & vb. n. Nodding.]
 1. To incline or bend, as the head or top; to make a motion of assent, of salutation, or of drowsiness with; as, to nod the head.
 2. To signify by a nod; as, to nod approbation.
 3. To cause to bend. [Poetic]
    By every wind that nods the mountain pine.   --Keats.
 Nod·ding a. Curved so that the apex hangs down; having the top bent downward.
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 nodding
      adj : having branches or flower heads that bend downward; "nodding
            daffodils"; "the pendulous branches of a weeping
            willow"; "lilacs with drooping panicles of fragrant
            flowers" [syn: cernuous, drooping, pendulous]
 nod
      n 1: a sign of assent or salutation or command
      2: the act of nodding the head
      v 1: express or signify by nodding; "He nodded his approval"
      2: lower and raise the head, as to indicate assent or agreement
         or confirmation; "The teacher nodded when the student gave
         the right answer"
      3: let the head fall forward through drowsiness; "The old man
         was nodding in his chair"
      4: sway gently back and forth, as is in a nodding motion; "the
         flowers were nodding in the breeze"
      5: be almost asleep; "The old man sat nodding by the fireplace"
      [also: nodding, nodded]
 nodding
      See nod