ほしゃしんし 輔車唇歯 LinksSentence search for 輔車唇歯Sentence search for ほしゃしんしKanji details for 輔, 車, 唇 and 歯Edit in JMdict Noun1. mutual dependenceRare term, See also 唇歯輔車 Discussions Log in to talk about this word.