\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.
{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.