| 1. | Nautical.
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| 2. | Also called pillar. the upright support of a jib crane. |
| 3. | any upright pole, as a support for an aerial, a post in certain cranes, etc. |
| 4. | to provide with a mast or masts. |
| 5. | before the mast, Nautical. as an unlicensed sailor: He served several years before the mast. |
