armil Meaning, Definition & Usage

Ar"mil noun
Etymology
L. armilla a bracelet, fr. armus arm: cf. OF. armille.
Definitions
  1. A bracelet. Obs.
  2. An ancient astronomical instrument. ✍ When composed of one ring placed in the plane of the equator for determining the time of the equinoxes, it is called an equinoctial armil; when of two or more rings, one in the plane of the meridian, for observing the solstices, it is called a solstitial armil. Whewell.

Webster 1913