Definition of "leech"
noun:
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An aquatic blood-sucking annelid of class Hirudinea, especially Hirudo medicinalis.
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A person who derives profit from others, in a parasitic fashion.
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A physician.
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A healer.
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The vertical edge of a square sail.
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The aft edge of a triangular sail.
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verb:
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To apply a leech medicinally, so that it sucks blood from the patient.
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To drain (resources) without giving back.
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