a. (Zool.) Of or pertaining to the leeches. [ 1913 Webster ]
‖n. pl. [ NL., fr. L. hirudo, hirudinis, a leech. ] (Zool.) An order of Annelida, including the leeches; -- called also
n. Any of a number of carnivorous or bloodsucking aquatic or terrestrial worms typically having a sucker at each end.