stock·er /ˈstɑkɚ/
  儲料器; 堆料機; 加煤機
  Stock·er n. One who makes or fits stocks, as of guns or gun carriages, etc.
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  stocker
       n : a domestic animal (especially a young steer or heifer) kept
           as stock until fattened or matured and suitable for a
           breeding establishment