a very small jumping insect without wings, that bites animals and humans and drinks their blood 蚤 
Oxford Collocations Dictionaryverb + flea- get
- have
- be infested with
- …
- bite
- carry disease
- spread disease
- …
- bite
- collar
- powder
- …
Word OriginOld English flēa, flēah, of Germanic origin; related to Dutch vlo and German Floh.
Idioms
with a flea in your ear
if somebody sends a person away with a flea in their ear, they tell them angrily to go away 以气愤的言语，以责难（把人轰走）