I. ˈer-(ˌ)ō, ˈa-(ˌ)rō noun
Etymology: Middle English arwe, from Old English; akin to Gothic arhwazna arrow, Latin arcus bow, arch, arc
Date: before 12th century
1. : a missile shot from a bow and usually having a slender shaft, a pointed head, and feathers at the butt
2. : something shaped like an arrow ; especially : a mark (as on a map or signboard) to indicate direction
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II. intransitive verb
Date: 1827
: to move fast and straight like an arrow in flight : dart