Cock \Cock\, n. [It. cocca notch of an arrow.]
1. The notch of an arrow or crossbow.
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2. The hammer in the lock of a firearm.
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{At cock}, {At full cock}, with the hammer raised and ready
to fire; -- said of firearms, also, jocularly, of one
prepared for instant action.
{At half cock}. See under {Half}.
{Cock feather} (Archery), the feather of an arrow at right
angles to the direction of the cock or notch. --Nares.
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