BACK a.
See Back stairs, Backstairs, and Backstair, in the Vocabulary. -- Back step (Mil.), the retrograde movement of a man or body of men, without changing front. -- Back stream, a current running against the main current of a stream; an eddy. -- To take the back track, to retrace one's steps; to retreat. [Colloq.]…
STATIONARY a. 2 definitions
Appearing to be at rest, because moving in the line of vision; not progressive or retrograde, as a planet. Stationary air (Physiol.), the air which under ordinary circumstances does not leave the lungs in respiration. -- Stationary engine. (a) A steam engine thet is permanently placed, in distinction from a portable e…