French gouine

← Breton gouin (borrowed)

← Proto-Brythonic *gwėɣin (derived)

← French gaine (doublet)

← Latin vāgīna (derived)

← Middle Breton gouhin (derived)

→ Breton gast (cognate)

→ Welsh gast (cognate)

→ French vagin (mention)

→ Scottish Gaelic galla (cognate)