すじがねい 筋金入り LinksSentence search for 筋金入りSentence search for すじがねいりKanji details for 筋, 金 and 入Edit in JMdict Noun which may take the genitive case particle 'no', Noun1. staunch; hardcore; dyed-in-the-woolNoun2. metal reinforcementorig. meaning Discussions Log in to talk about this word.