"having sharp outlines" (as though worked with a chisel), 1821, figurative past-participle adjective from chisel (v.).
Entries linking to chiseled
chisel v.
c. 1500, "to break, cut, gouge, etc. with a chisel," from chisel (n.). Slang sense of "to cheat, defraud" is first recorded in 1808 as chizzel; origin and connection to the older word are obscure (but compare slang sense of gouge; perhaps the sense is "to cut close" as in a bargain). Related: Chiseled; chiseling.