Definitions
1.nounAn aquatic blood-sucking annelid of class Hirudinea, especially Hirudo medicinalis.
2.nounA person who derives profit from others in a parasitic fashion.
3.nounA glass tube designed for drawing blood from damaged tissue by means of a vacuum.
4.verbTo apply a leech medicinally, so that it sucks blood from the patient.
5.verbTo drain (resources) without giving back."Bert leeched hundreds of files from the BBS, but never uploaded anything in return."