Having sharp, well-defined features (like a chiseled jaw); or shaped with a chisel tool.
From 'chisel' (a cutting tool), which comes from Old French 'cisel.' The physical tool dates back to ancient Egypt; the figurative meaning for sharp features developed in modern English.
A 'chiseled' face became the ideal in marketing and Hollywood because sculptors have used chisels for 5,000 years to create the most dramatic, striking features—we're literally describing human faces using sculpting language.
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