what is a tugboat
Full Definition of TUGBOAT. : a strongly built powerful boat used for towing and pushing âcalled also towboat. See tugboat defined for English-language learners.See tugboat defined for kids. ADVERTISEMENT.ull Definition of TUGBOAT. : a strongly built powerful boat used for towing and pushing âcalled also towboat. See tugboat defined for English-language learners. See tugboat defined for kids. ADVERTISEMENT.