leech has definitions from the field of zoology
1
[ noun ] (zoology) carnivorous or bloodsucking aquatic or terrestrial worms typically having a sucker at each end

Used in print

(Bell I. Wiley, "Home Letters of Johnny Reb and Billy...)

A third remarked of slowness of Southerners : `` They moved about from corner to corner , as uneasy as a litter of hungry leaches on the neck of a wooden god '' .

2
[ noun ] Last name, frequency rank in the U.S. is 5053
3
[ verb ] draw blood

Examples

"In the old days, doctors routinely bled patients as part of the treatment"

Related terms

treat medicine

4
[ noun ] a follower who hangs around a host (without benefit to the host) in hope of gain or advantage

Related terms

follower mooch

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