n. 1. A bolt for a crossbow. 2. A tool, such as a stonemason's chisel, that has a squared head. 3. A small diamond-shaped or square pane of glass in a latticed window. [Middle English quarel, from Old French, from Vulgar Latin *quadrellus, diminutive of Late Latin quadrus, square, from Latin quadrum; see kwetwer- in the Appendix of Indo-European roots.] |
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