We found 13 dictionaries that define the word tugboats:

General (10 matching dictionaries)

1. tugboats: Merriam-Webster
2. tugboats: Collins English Dictionary
3. tugboats: Vocabulary.com
4. Tugboats, tugboats: Wordnik
5. tugboats: Cambridge Advanced Learner's Dictionary
6. tugboats: Wiktionary
7. tugboats: Dictionary.com
8. tugboats: Cambridge Essential American English Dictionary
9. Tugboats: Wikipedia, the Free Encyclopedia
10. Tugboats: TheFreeDictionary.com

Computing (1 matching dictionary)

11. Tugboats: Encyclopedia

Medicine (1 matching dictionary)

12. Tugboats: Medical dictionary

Miscellaneous (1 matching dictionary)

13. Tugboats: Idioms

(Note: See tugboat as well.)

Definitions from Wiktionary (tugboat) ▸ noun:  (nautical) A small, powerful boat used to push or pull barges or to help maneuver larger vessels. ▸ Also see tugboat Opposite: pushboats, towboats, barges ▸ Words similar to tugboats ▸ Usage examples for tugboats ▸ Idioms related to tugboats ▸ Wikipedia articles (New!) ▸ Popular adjectives describing tugboats ▸ Words that often appear near tugboats ▸ Rhymes of tugboats ▸ Invented words related to tugboats