standard line
noun (1)
variants:
or standard route
Definition of standard line
(Entry 1 of 2)
: a railroad line or route upon which the regular or highest rates apply : a fast-service route in distinction from slower and perhaps longer routes or from one that is partly by rail and partly by water — compare differential route
standard line
noun (2)Definition of standard line (Entry 2 of 2)
: type casting in which all printed letters and figures regardless of size or style align at the bottom