DECLIVITY n.
Deviation from a horizontal line; gradual descent of surface; inclination downward; slope; -- opposed to acclivity, or ascent; the same slope, considered as descending, being a declivity, which, considered as ascending, is an acclivity.
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…