The definition of a leech is a type of worm found in water or in wet areas with a strong sucker on both ends of its body which it uses to suck blood from its hosts, or a person who attaches themselves to another person like a parasite.(noun)
To leech is defined as to get a file on a file sharing site that is being hosted by another user without allowing your file to be copied at the same time.(verb)
An example of to leech is to download a movie on IsoHunt without sharing it to other users to download.
To leech means to cling to something or take all that thing has.(verb)
An example of to leech is for a loan shark to take the money of someone who defaults on a loan.
See leech in Webster's New World College Dictionary
Origin: ME leche < OE læce, akin to OHG lāhhi, Goth lēkeis, magician, healer, OE lacnian, to heal, prob. < IE base *le-, collect, gather together > L lex (see legal); leechsense is supposedly same word (from use in medicine), but OE (Kentish) lyce, ME liche, MDu lieke suggest different word assimilated by folk etym.
Origin: LME lyche, akin to ON lik < Du lijk, boltrope < IE base *lei-, to bind, fasten > L ligare, to tie
See leech in American Heritage Dictionary 4
Origin: Middle English leche, physician, leech
Origin: , from Old English lǣce; see leg- in Indo-European roots.
Origin: Middle English leche
Origin: , probably from Middle Low German līk, leech line; see leig- in Indo-European roots.
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