DUCK n.
A sudden inclination of the bead or dropping of the person, resembling the motion of a duck in water. Here be, without duck or nod, Other trippings to be trod. Milton. Bombay duck (Zoöl.), a fish. See Bummalo. -- Buffel duck, or Spirit duck. See Buffel duck. -- Duck ant (Zoöl.), a species of white ant in Jamaica whic…
DUMP v. 3 definitions
ce, to unload from a cart by tilting it; as, to dump sand, coal, etc. [U.S.] Bartlett. Dumping car or cart, a railway car, or a cart, the body of which can be tilted to empty the contents; -- called also dump car, or dump cart.
DUPLEX a.
y means of two cutting tools, on opposite sides of the piece operated upon. -- Duplex pumping engine, a steam pump in which two steam cylinders are placed side by side, one operating the valves of the other. -- Duplex querela Etym: [L., double complaint] (Eccl. Law), a complaint in the nature of an appeal from the or…
DUTY n.
The efficiency of an engine, especially a steam pumping engine, as measured by work done by a certain quantity of fuel; usually, the number of pounds of water lifted one foot by one bushel of coal (94 lbs. old standard), or by 1 cwt. (112 lbs., England, or 100 lbs., United States).