Webster's English Dictionary

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elevator

el.e.va.tor \'el-*-.va-t-*r\ n 1: one that raises or lifts something up : 
   as  1a: an endless belt or chain conveyor with cleats, scoops, or buckets 
   for r aising material 1b: a cage or platform and its hoisting machinery for 
   conveying something t o different levels 1c: a building for elevating, 
   storing, discharging, and sometimes processin g grain 2: a movable 
   auxiliary airfoil usu. attached to the tail plane of an airpla ne for 
   producing motion up or down