The Collaborative International Dictionary of English v.0.48:

Armillary \Ar"mil*la*ry\, a. [LL. armillarius, fr. L. armilla
   arm ring, bracelet, fr. armus arm: cf. F. armillaire. See
   Arm, n.]
   Pertaining to, or resembling, a bracelet or ring; consisting
   of rings or circles.
   [1913 Webster]

   Armillary sphere, an ancient astronomical machine composed
      of an assemblage of rings, all circles of the same sphere,
      designed to represent the positions of the important
      circles of the celestial sphere. --Nichol.
      [1913 Webster]

WordNet (r) 3.0 (2006):

armillary
    adj 1: of or relating to bracelets