Leech \Leech\, v. t. [imp. & p. p. {Leeched} (l[=e]cht); p. pr. & vb. n. {Leeching}.] 1. To treat as a surgeon; to doctor; as, to leech wounds. [Archaic] [1913 Webster] 2. To bleed by the use of leeches. [1913 Webster]