Word Study
armillary
CIDE DICTIONARY
armillary, 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]
OXFORD DICTIONARY
armillary, adj. relating to bracelets.
Idiom
armillary sphere hist. a representation of the celestial globe constructed from metal rings and showing the equator, the tropics, etc.
Etymology
mod.L armillaris f. L armilla bracelet
For further exploring for "armillary" in Webster Dictionary Online