(n.) A flat-bottomed river barge or coasting vessel.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). billyboy. Retrieved September 25, 2026, from http://smartdefine.org/billyboy/definitions/1980331 |
| Chicago | Webster's. 2011. "billyboy" http://smartdefine.org/billyboy/definitions/1980331 (accessed September 25, 2026). |
| Harvard | Webster's 2011, billyboy, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/billyboy/definitions/1980331>. |
| MLA | Webster's. "billyboy" 27 May 2011. Web. 25 September 2026. <http://smartdefine.org/billyboy/definitions/1980331> |