Irish leac

← Breton lec'h (mention)

← Gaulish Arelica (mention)

← Proto-Celtic *ɸlikkā (inherited)

← Welsh llech (mention)

← Ancient Greek πλάξ (mention)

← Proto-Indo-European *pl̥keh₂ (inherited)

← Proto-Indo-European *pleh₂- (mention)

← Cornish legh (mention)

← Old Irish lecc (inherited)

→ English Leek (cognate)