n. 交叉的股骨图形

[ noun ]
two crossed bones (or a representation of two crossed bones) used as a symbol danger or death
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Crossbones \Cross"bones`\ (kr[o^]s"b[=o]nz`), 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 of death.

Crossbones, scythes, hourglasses, and other lugubrious
emblems of mortality. --Hawthorne.