1. chop, chopper, grounder, ground ball, groundball, hopper

usage: a grounder that bounces high in the air

2. chopper, pearly, tooth

usage: informal terms for a human `tooth'

3. helicopter, chopper, whirlybird, eggbeater, heavier-than-air craft

usage: an aircraft without wings that obtains its lift from the rotation of overhead blades

4. cleaver, meat cleaver, chopper, knife

usage: a butcher's knife having a large square blade

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