English
spotface
From spot + face.
Today it means
noun a shallow machined face, especially a shallow circular or cylindrical recess, machined on (for example) a cast part to offer a flat face against which to seat a fastener (often a shallow counterbore).
Sources
Sources: Wiktionary, “spotface”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.
Etymograph / spotface