Learn how to say Fleas correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word flea:
a small wingless jumping insect which feeds on the blood of mammals and birds. It sometimes transmits diseases through its bite, including plague and myxomatosis.
Order Siphonaptera: several families and many species, including the human flea (Pulex irritans)
(as) fit as a flea
in very good health.
a flea in one’s ear
a sharp reproof:
she expected to be sent away with a flea in her ear
Old English flēa, flēah, of Germanic origin; related to Dutch vlo and German Floh