scend /ˈsɛnd/
  波浪的推動力;船的縱搖
  Send, n. Naut. The impulse of a wave by which a vessel is carried bodily. [Written also scend.] --W. C. Russell. “The send of the sea”.
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  scend
       v : rise or heave upward under the influence of a natural force
           such as a wave; "the boats surged" [syn: surge]