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water flea
noun
Definition of WATER FLEA
: any of various small active dark or brightly colored aquatic crustaceans (as a daphnia or cyclops)
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First Known Use of WATER FLEA
circa 1585
WATER FLEA Defined for Kids
water flea
noun
Definition of WATER FLEA for Kids
: a tiny often brightly colored freshwater animal related to the crab and lobster
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