bed-screw
Bed" screw`. 1. (Naut.) A form of jack screw for lifting large bodies, and assisting in launching. 2. A long screw formerly used to fasten a bedpost to one of the adjacent side pieces.
Bed" screw`. 1. (Naut.) A form of jack screw for lifting large bodies, and assisting in launching. 2. A long screw formerly used to fasten a bedpost to one of the adjacent side pieces.