WordNet sense 1 (informal terms for a human `tooth'):

pearly

WordNet sense 2 (an aircraft without wings that obtains its lift from the rotation of overhead blades):

eggbeater, helicopter, whirlybird

WordNet sense 3 (a butcher's knife having a large square blade):

cleaver, meat cleaver

WordNet sense 4 (a grounder that bounces high in the air):

chop