An aquatic blood-sucking annelid of class Hirudinea, especially Hirudo medicinalis.

(figurative) A person who derives profit from others in a parasitic fashion.

(Germanic paganism) A healer.

(nautical) The vertical edge of a square sail.

(nautical) The aft edge of a triangular sail.

(transitive, literally) To apply a leech medicinally, so that it sucks blood from the patient.

(transitive, figurative) To drain (resources) without giving back.