AXIS n.
ed also axis band, axial fiber, and cylinder axis. -- Axis in peritrochio, the wheel and axle, one of the mechanical powers. -- Axis of a curve (Geom.), a straight line which bisects a system of parallel chords of a curve; called a principal axis, when cutting them at right angles, in which case it divides the curve…
BALL n.
thin certain limits. -- Ball bearings, a mechanical device for lessening the friction of axle bearings by means of small loose metal balls. -- Ball cartridge, a cartridge containing a ball, as distinguished from a blank cartridge, containing only powder. -- Ball cock, a faucet or valve which is opened or closed by t…
BLIND a.
ind buds; blind flowers. Blind alley, an alley closed at one end; a cul-de-sac. -- Blind axle, an axle which turns but does not communicate motion. Knight. -- Blind beetle, one of the insects apt to fly against people, esp. at night. -- Blind cat (Zoöl.), a species of catfish (Gronias nigrolabris), nearly destitute…