Source : Webster's Revised Unabridged Dictionary (1913)

Hastate \Has"tate\, Hastated \Has"ta*ted\, a. [L. hastatus, fr.
   hasta spear. Cf. {Gad}, n.]
   Shaped like the head of a halberd; triangular, with the basal
   angles or lobes spreading; as, a hastate leaf.