Latin lavabrum

← Gaulish lautron (cognate)

← Proto-Celtic *lowatrom (cognate)

← Proto-Germanic *lauþrą (cognate)

← Mycenaean Greek *𐀩𐀺𐀵𐀫 (cognate)

← Ancient Greek λουτρόν (cognate)

← Proto-Hellenic *lewotrón (cognate)

← Proto-Indo-European *lewh₃- (root)

← Proto-Indo-European *lewh₃- (suffix)

← Proto-Indo-European *-dʰrom (suffix)

← Proto-Italic (inherited)

← Latin lavō (suffix)

← Latin brum (suffix)

← Latin Lavatrae (mention)

← Latin Laudradum (mention)

← Old Irish lóathar (cognate)