Lewis & Short

ignĭārĭus, a, um, adj. [ignis], of or belonging to fire.

  1. I. Adj.: lapis, flint, Marc. Emp. 33 med.
  2. II. Subst.: ignĭārĭum, ĭi, n., an implement for producing fire, Plin. 16, 40, 76, § 207.