loratu (Basque) comes from Basque lore, from Latin flōs, from Proto-Italic flōs, from Proto-Indo-European bʰleh₃-s, from Proto-Indo-European bʰleh₃-, from Proto-Indo-European bʰel-, from Proto-Indo-European bʰōl-.
loratu (Basque): to flower, blossom, bloom