The Collaborative International Dictionary of English v.0.48:

Miliary \Mil"ia*ry\ (?; 277), a. [L. miliarius, fr. milium
   millet: cf. F. miliaire.]
   [1913 Webster]
   1. Like millet seeds; as, a miliary eruption.
      [1913 Webster]

   2. (Med.) Accompanied with an eruption like millet seeds; as,
      a miliary fever.
      [1913 Webster]

   3. (Zool.) Small and numerous; as, the miliary tubercles of
      Echini.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Miliary \Mil"ia*ry\, n. (Zool.)
   One of the small tubercles of Echini.
   [1913 Webster]