The Collaborative International Dictionary of English v.0.48:

Arrowy \Ar"row*y\, a.
   1. Consisting of arrows.
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            How quick they wheeled, and flying, behind them shot
            Sharp sleet of arrowy showers.        --Milton.
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   2. Formed or moving like, or in any respect resembling, an
      arrow; swift; darting; piercing. "His arrowy tongue."
      --Cowper.
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            By the blue rushing of the arrowy Rhone. --Byron.
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            With arrowy vitalities, vivacities, and ingenuities.
                                                  --Carlyle.
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