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1.                 From The Collaborative International Dictionary of English v.0.48:
                   
   
   
                   
                     
   Theave \Theave\, n. [Cf. W. dafad a sheep, ewe.]
      A ewe lamb of the first year; also, a sheep three years old.
      [Written also thave.] [Prov. Eng.] --Halliwell.
      [1913 Webster]