wedge marks in stone
Rare term for marks left in stone from splitting with wedges, now sometimes used for visual effect. Related to 矢 (wedge).
See also: 矢 (や)
The wedge marks remaining on the stone wall tell of the old stone-splitting technique.
Compound of 矢 (wedge) and 跡 (trace, mark). The exact historical derivation is uncertain, but the word describes the physical traces of stone-splitting wedges.