un·der·cut /ˌʌndɚ/
  牛腰部下側嫩肉,砍口,削球,底切(vt.)廉價出售,底切,雕出
  un·der·cut /ˈəndɝˌkət/ 名詞
  倒凹的,切去下部,下部切開
  undercut
  下部切割; 底割
  Un·der·cut n. The lower or under side of a sirloin of beef; the fillet.
  Un·der·cut v. t.
  1. To cut away, as the side of an object, so as to leave an overhanging portion.
  Un·der·cut p. a. Cut away below.
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  undercut
       n 1: the material removed by a cut made underneath
       2: the tender meat of the loin muscle on each side of the
          vertebral column [syn: tenderloin]
       3: a notch cut in the trunk of tree in order to determine the
          direction of its fall
       4: (sports) a stroke that puts reverse spin on the ball; "cuts
          do not bother a good tennis player" [syn: cut]
       5: a cut made underneath to remove material
       v 1: sell cheaper than one's competition [syn: undersell]
       2: cut away material from the underside of (an object) so as to
          leave an overhanging portion in relief
       3: cut away the underpart of; "undercut a vein of ore"
       4: strike (the ball) in golf, tennis, or hockey obliquely
          downward so as to give a backspin or elevation to the shot
       5: cut obliquely into (a tree) below the main cut and on the
          side toward which the tree will fall
       [also: undercutting]