flea


Concise Oxford English Dictionary © 2008 Oxford University Press:
flea/fliː/
noun a small wingless jumping insect which feeds on the blood of mammals and birds. [Pulex irritans (human flea) and other species, order Siphonaptera.]
– phrases
(as) fit as a flea in very good health.
a flea in one's ear a sharp reproof.
– origin OE flēa, flēah, of Gmc origin.
'flea' also found in these Oxford entries:

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