Someone who does, performs, or executes; an active person, an agent.
To drain (resources) without giving back.
To apply a leech medicinally, so that it sucks blood from the patient.
A person who derives profit from others in a parasitic fashion.
The aft edge of a triangular sail.
An aquatic blood-sucking annelid of class Hirudinea, especially Hirudo medicinalis.
A healer.
The vertical edge of a square sail.