jambeauEnglishOxford Dictionary of Englishjambeau /ˈʒambəʊ , ˈdʒambəʊ / ▸ noun (plural jambeaux /ˈʒambəʊ , ˈdʒambəʊ /)(plural or jambeaus) historical a piece of armour for the leg. – ORIGIN late Middle English: apparently an Anglo-Norman French derivative of French jambe ‘leg’.