spring·er /ˈsprɪŋɚ/
  跳躍的人;起拱石;一種狗
  Spring·er n.
  1. One who, or that which, springs; specifically, one who rouses game.
  2. A young plant. [Obs.]
  3. Arch. (a) The impost, or point at which an arch rests upon its support, and from which it seems to spring. Hence: (b) The bottom stone of an arch, which lies on the impost. The skew back is one form of springer. (c) The rib of a groined vault, as being the solid abutment for each section of vaulting.
  4. Zool. The grampus.
  5. Zool. A variety of the field spaniel. See Spaniel.
  6. Zool. A species of antelope; the springbok.
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  springer
       n 1: the lowest stone in an arch -- from which it springs [syn: impost]
       2: a cow about to give birth [syn: springing cow]
       3: a large spaniel with wavy silky coat usually black or liver
          and white [syn: springer spaniel]