The Collaborative International Dictionary of English v.0.48:

Unique \U*nique"\, a. [F. unique; cf. It. unico; from L. unicus,
   from unus one. See One.]
   Being without a like or equal; unmatched; unequaled;
   unparalleled; single in kind or excellence; sole. --
   U*nique"ly, adv. -- U*nique"ness, n.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Unique \U*nique"\, n.
   A thing without a like; something unequaled or unparalleled.
   [R.]
   [1913 Webster]

         The phenix, the unique pf birds.         --De Quincey.
   [1913 Webster]