ENGLISH
REFERENCE

flea

n. countable
B2 Upper Intermediate US //ˈfɫi// UK //flˈiː// flea Archaic Vulgar

n. a tiny, jumping insect that lives on animals like dogs or cats and drinks their blood.

n. a small, wingless, blood-sucking insect of the order Siphonaptera, known for its ability to leap great distances and transmit diseases.


SIMPLE

The cat has fleas and needs a special treatment.

CONTEXTUAL

Pet owners often struggle with flea infestations during the warmer summer months when the insects breed more quickly.

COMPLEX

While a single flea bite causes only minor irritation for most animals, some pets develop severe allergic dermatitis in response to the insect's saliva.

Etymology 1

From Middle English fle, from Old English flēah, flēa, from Proto-West Germanic flauh, from Proto-Germanic flauhaz (compare West Frisian flie, Low German Flo, Flö, Dutch vlo, German Floh, Icelandic fló), from pre-Germanic plóukos, plówkos, from or akin to Proto-Indo-European *plúsis (compare Latin pulex, Sanskrit प्लुषि (plúṣi)). The archaic plural fleen is from Middle English fleen, flen, from Old English flēan (“fleas”).

Etymology 2

Alternative forms.

Usage

Commonly used in the plural form when referring to an infestation.

Idioms1 entry

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