English ferrule

← Breton gwar (cognate)

← Proto-Celtic *wēros (derived)

← Welsh gŵyr (cognate)

← Middle English verel (inherited)

← Middle English virel (mention)

← Middle English virole (mention)

← Old French virole (derived)

← Proto-Indo-European *weyh₁ros (derived)

← Proto-Indo-European *weyh₁- (mention)

← Latin ferrum (derived)

← Latin viriola (derived)

← Latin viria (mention)

← Middle Irish fiar (cognate)

→ English ferruled (suffix)

→ English virole (mention)

→ Japanese フェルール (borrowed)