盲めくら穴あな

noun

blind hole

Technical term in engineering and manufacturing for a hole that does not go all the way through a workpiece. The kanji 盲 (blind) can be considered sensitive; in some contexts the kana spelling or alternative terms like 止まり穴 are preferred.

• この部ぶ品ひんには盲めくら穴あながいくつか開あけられている。

  Several blind holes are drilled in this part.

• 盲めくら穴あなの深ふかさをノギスで測そく定ていした。

  I measured the depth of the blind hole with calipers.