BOOM n.
A line of connected floating timbers stretched across a river, or inclosing an area of water, to keep saw logs, etc., from floating away. Boom iron, one of the iron rings on the yards through which the studding-sail booms traverse. -- The booms, that space on the upper deck of a ship between the foremast and mainmast,…
BRAIN n.
on of the spinal cord, and is developed from three embryonic vesicles, whose cavities are connected with the central canal of the cord; the cavities of the vesicles become the central cavities, or ventricles, and the walls thicken unequally and become the three segments, the fore-, mid-, and hind-brain.…
BREAST n.
The power of singing; a musical voice; -- so called, probably, from the connection of the voice with the lungs, which lie within the breast. [Obs.] By my troth, the fool has an excellent breast. Shak. Breast drill, a portable drilling machine, provided with a breastplate, for forcing the drill against the work. -- Bre…
BRIDGE n.
rail, for the convenience of the officer in charge of the ship; in paddlewheel vessels it connects the paddle boxes. -- Bridge of the nose, the upper, bony part of the nose. -- Cantalever bridge. See under Cantalever. -- Draw bridge. See Drawbridge. -- Flying bridge, a temporary bridge suspended or floating, as for…