1. (n.) A square bar of wood or iron, used to support the topmast, being passed through a hole or mortise at its heel, and resting on the trestle trees.

2. (n.) A wooden or metal bar or pin, used to support or steady anything.

3. (n.) A pin of hard wood, tapering to a point, used to open the strands of a rope in splicing.

4. (n.) A block of wood used in mounting and dismounting heavy guns.

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