きっこうかっこ 亀甲括弧 LinksSentence search for 亀甲括弧Sentence search for きっこうかっこKanji details for 亀, 甲, 括 and 弧Edit in JMdict Noun1. tortoise-shell bracket (var. of parentheses)〔 〕 Discussions Log in to talk about this word.