- leech, bloodsucker, hirudinean - carnivorous or bloodsucking aquatic or terrestrial worms typically having a sucker at each end
--1 is a kind of annelid, annelid worm, segmented worm
--1 is a member of Hirudinea, class Hirudinea
--1 has particulars: medicinal leech, Hirudo medicinalis; horseleech