Lewis & Short

† ăcontĭas, ae, m., = ἀκοντίας.

  1. I. A quick-darting serpent, Amm. 22, 15, 27.
  2. II. In plur., ăcontĭae, ārum, = ἀκοντίαι, meteors or shooting-stars with dartlike trains, Plin. 2, 25, 22, § 89.