"Lavabo" is a Latin word which means "I will wash." "Lavaboes," while not a commonly used word, appears to be the plural form of "lavabo." The phonetic transcription for "lavaboes" is /ləˈvɑboʊz/. The word adheres to the English language's phonetic rules for plurals, whereby the suffix "-s" is added to a singular noun to indicate that there is more than one of it. In this case, the suffix is added to the Latin-derived noun "lavabo," resulting in the rare plural form "lavaboes."