01 n. pl. A representation of two of the leg bones or arm bones of a skeleton, laid crosswise, often surmounted with a skull, and serving as a symbol…
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A representation of two of the leg bones or arm bones of a skeleton, laid crosswise, often surmounted with a skull, and serving as a symbol of death.“Crossbones, scythes, hourglasses, and other lugubrious emblems of mortality.” — Hawthorne.