ANCHOR n.
the shank at right angles to the arms. -- The anchor comes home, when it drags over the bottom as the ship drifts. -- Foul anchor, the anchor when it hooks, or is entangled with, another anchor, or with a cable or wreck, or when the slack cable entangled. -- The anchor is acockbill, when it is suspended perpendicul…
BALL n.
valve (Mach.), a contrivance by which a ball, placed in a circular cup with a hole in its bottom, operates as a valve. -- Ball vein (Mining), a sort of iron ore, found in loose masses of a globular form, containing sparkling particles. -- Three balls, or Three golden balls, a pawnbroker's sign or shop.…
BAROMETER n.
eroid barometer, under Aneroid. -- Marine barometer, a barometer with tube contracted at bottom to prevent rapid oscillations of the mercury, and suspended in gimbals from an arm or support on shipboard. -- Mountain barometer, a portable mercurial barometer with tripod support, and long scale, for measuring heights.…
BELL JAR n.
A glass vessel, varying in size, open at the bottom and closed at the top like a bell, and having a knob or handle at the top for lifting it. It is used for a great variety of purposes; as, with the air pump, and for holding gases, also for keeping the dust from articles exposed to view.
BOND n.
Burrows. -- Bond (or lap) of a slate, the distance between the top of one slate and the bottom or drip of the second slate above, i. e., the space which is covered with three thicknesses; also, the distance between the nail of the under slate and the lower edge of the upper slate. -- Bond timber, timber worked into…