FLEA, noun [See Flee and Fly.] An insect of the genus Pulex. It has two eyes and six feet; the feelers are like threads; the rostrum is inflected, setaceous, and armed with a string. The flea is remarkable for its agility, leaping to a surprising distance, and its bite is very troublesome.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI