whip·saw /ˈhwɪpˌsɔ, ˈwɪp-/
 套在木框的大齒鋸; [美口] 使兩頭吃虧
 Whip·saw n.
 1. A saw for dividing timber lengthwise, usually set in a frame, and worked by two persons; also, a fret saw.
 2. A kind of narrow ripsaw, tapering from butt to point, with hook teeth and averaging from 5 to 7½ feet in length, used by one or two men.
 Whip·saw, v. t.
 1. To saw with the whipsaw.
 2.  To defeat in, or cause to lose, two different bets at the same turn or in one play, as a player at faro who has made two bets at the same time, one that a card will lose and another that a different card will win; hence, to defeat in spite of every effort.
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 whipsaw
      n : a handsaw intended for use by two people [syn: two-handed
          saw]
      v 1: victimize, especially in gambling or negotiations
      2: saw with a whipsaw
      [also: whipsawn]