The Collaborative International Dictionary
Wiktionary
a. Resembling a leech or some aspect of one; clinging, parasitic.
WordNet
adj. of plants or persons; having the nature or habits of a parasite or leech; living off another; "a wealthy class parasitic upon the labor of the masses"; "parasitic vines that strangle the trees"; "bloodsucking blackmailer"; "his indolent leechlike existence" [syn: parasitic, parasitical, bloodsucking]
Usage examples of "leechlike".
It was ominous how religious fanatics like Aquila so often fastened themselves, leechlike, to wives of the wealthy.
The worst of them was a stinging insect which left huge welts but the most insidious was a leechlike bloodsucker.
In close proximity to humans, it uses tentacular, prehensile vines to entrap its prey while leechlike adaptations latch onto exposed skin and draw fatal quantities of blood.