ばかあな バカ穴 LinksSentence search for バカ穴Sentence search for ばかあなSentence search for 馬鹿穴Kanji details for 穴Edit in JMdict Noun1. clearance hole (hole for a bolt, screw, etc., which is large enough to allow the thread, etc. to pass through)Other forms馬鹿穴 【ばかあな】 Discussions Log in to talk about this word.