clearance groove; undercut
Technical term in machining and engineering: a groove cut to provide clearance for a tool or mating part, or to relieve stress.
This part requires a clearance groove.
逃げ溝の寸法を図面に記入してください。
Please indicate the dimensions of the undercut on the drawing.
Standard kanji spelling for this technical term.
Mixed kana-kanji spelling; sometimes used for clarity.
Mixed kanji-kana spelling; less common but still encountered.
Compound of 逃げ (にげ, 'escape, relief') and 溝 (みぞ, 'groove'). The term literally means 'escape groove', referring to a groove that provides clearance or relief in mechanical contexts.