D defs.my
Entry 2 senses Webster, 1913

Arrowhead

/ăr'-ōh-ĕdˌ/ · Ar·row·head · IPA /ˈæɹəʊhɛd/
01 n. the pointed head or striking tip of an arrow.
  1. 1.
    the pointed head or striking tip of an arrow.
  2. 2.
    An aquatic plant of the genus Sagittaria, esp. Sagittaria sagittifolia, -- named from the shape of the leaves.(Bot.)