01 n. One who, or that which, heads nails, rivets, etc., esp. a machine for heading.
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1.
One who, or that which, heads nails, rivets, etc., esp. a machine for heading.
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2.
One who heads a movement, a party, or a mob; head; chief; leader.[R.]
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3.
A brick or stone laid with its shorter face or head in the surface of the wall.(Arch.)
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4.
A reaper for wheat, that cuts off the heads only.
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5.
A fall or plunge head first, as while riding a bicycle, or a skateboard, or in bathing; -- sometimes, implying the striking of the head on the ground; as, to take a header.[Colloq.]