,noun, verb, subbed, sub⋅bing. Informal.| 1. | a submarine. |
| 2. | a substitute. |
| 3. | a submarine sandwich. hero sandwich. |
| 4. | a subcontractor. |
| 5. | a sublieutenant. |
| 6. | a subordinate. |
| 7. | a subaltern. |
| 8. | British. an advance against one's wages, esp. one granted as a subsistence allowance. |
| 9. | Photography. a substratum. |
| 10. | to act as a substitute for another. |
| 11. | Photography. to coat (a film or plate) with a substratum. |