| 1. | the upper side. |
| 2. | Usually, topsides. Nautical. the outer surface of a hull above the water. |
| 3. | the most authoritative position or level. |
| 4. | Chiefly British. a cut of beef similar to a U.S. rump roast. Compare silverside (def. 1). |
| 5. | British. the top or outer side of a round of beef; beef from the outer thigh of a butchered cow. |
| 6. | of, pertaining to, or located on the topside. |
| 7. | of the most authoritative rank. |
| 8. | Also, topsides. up on the deck: He left the engine room and went topside. |
| 9. | to, toward, or at the topside. |