'Unclean' definitions:

Definition of 'unclean'

From: WordNet
adjective
Soiled or likely to soil with dirt or grime; "dirty unswept sidewalks"; "a child in dirty overalls"; "dirty slums"; "piles of dirty dishes"; "put his dirty feet on the clean sheet"; "wore an unclean shirt"; "mining is a dirty job"; "Cinderella did the dirty work while her sisters preened themselves" [syn: dirty, soiled, unclean] [ant: clean]
adjective
Having a physical or moral blemish so as to make impure according to dietary or ceremonial laws; "unclean meat"; "and the swine...is unclean to you"-Leviticus 11:3 [syn: unclean, impure] [ant: clean]

Definition of 'Unclean'

From: GCIDE
  • Unclean \Un*clean"\ ([u^]n*kl[=e]n"), a. [AS. uncl[=ae]ne. See Unnot, and Clean.]
  • 1. Not clean; foul; dirty; filthy. [1913 Webster]
  • 2. Ceremonially impure; needing ritual cleansing. [1913 Webster]
  • He that toucheth the dead body of any man shall be unclean seven days. --Num. xix. 11. [1913 Webster]
  • 3. Morally impure. "Adultery of the heart, consisting of inordinate and unclean affections." --Perkins. [1913 Webster] -- {Un*clean"ly}, adv. -- {Un*clean"ness}, n. [1913 Webster]
  • Unclean animals (Script.), those which the Israelites were forbidden to use for food.
  • Unclean spirit (Script.), a wicked spirit; a demon. --Mark i. 27. [1913 Webster]