Hour'-line, n.
n. 1. (Astron.) A line indicating the hour.
Sense 2. (Dialing.) A line on which the shadow falls at a given hour; the projection of an hour-circle on a plane.
n. 1. (Astron.) A line indicating the hour.
Sense 2. (Dialing.) A line on which the shadow falls at a given hour; the projection of an hour-circle on a plane.