くびね 首根っこ LinksSentence search for 首根っこSentence search for くびねっこSentence search for 首根っ子Kanji details for 首 and 根Edit in JMdict Noun1. scruff of the neckOther forms首根っ子 【くびねっこ】Notes首根っ子: Rarely-used kanji form. Discussions Log in to talk about this word.