bumboat Syllabification: (bum·boat)Pronunciation: /ˈbəmˌbōt/Definition of bumboat noun a small vessel carrying provisions for sale to ships in port. Origin: late 17th century: from bum1 + boat. The term originally denoted a scavenger's boat removing refuse, etc., from ships, often also bringing produce for salebumboat in other Oxford dictionaries Definition of bumboat in the British & World English dictionary