(1):

(n.) A glass tube of peculiar construction, adapted for drawing blood from a scarified part by means of a vacuum.

(2):

(n.) Any one of numerous genera and species of annulose worms, belonging to the order Hirudinea, or Bdelloidea, esp. those species used in medicine, as Hirudo medicinalis of Europe, and allied species.

(3):

(n.) The border or edge at the side of a sail.

(4):

(n.) See 2d Leach.

(5):

(v. t.) See Leach, v. t.

(6):

(v. t.) To treat as a surgeon; to doctor; as, to leech wounds.

(7):

(n.) A physician or surgeon; a professor of the art of healing.

(8):

(v. t.) To bleed by the use of leeches.