01 n. An arrow for a crossbow; -- so named because it commonly had a square head.
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1.
An arrow for a crossbow; -- so named because it commonly had a square head.[Obs.]“To shoot with arrows and quarrel.” — Sir J. Mandeville.“Two arblasts, . . . with windlaces and quarrels.” — Sir W. Scott.
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2.
Any small square or quadrangular member(Arch.)
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3.
A glazier's diamond.
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4.
A four-sided cutting tool or chisel having a diamond-shaped end.