The Collaborative International Dictionary of English v.0.48:

Antiquary \An"ti*qua*ry\, a. [L. antiquarius, fr. antiquus
   ancient. See Antique.]
   Pertaining to antiquity. [R.] "Instructed by the antiquary
   times." --Shak.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Antiquary \An"ti*qua*ry\, n.; pl. Antiquaries.
   One devoted to the study of ancient times through their
   relics, as inscriptions, monuments, remains of ancient
   habitations, statues, coins, manuscripts, etc.; one who
   searches for and studies the relics of antiquity.
   [1913 Webster]

WordNet (r) 3.0 (2006):

antiquary
    n 1: an expert or collector of antiquities [syn: antiquary,
         antiquarian, archaist]