gunstone

Etymology

From the Old Norse personal name Gunni + -s- + Old English tūn (“enclosure; settlement, town”).

name

A hamlet near Codsall, South Staffordshire district, Staffordshire, England (OS grid ref SJ8704).
A habitational surname.

noun

A cannonball.“And tell the pleasant prince this mock of his / Hath turn'd his balls to gunstones”