'Contour line' definitions:

Definition of 'contour line'

(from WordNet)
noun
A line drawn on a map connecting points of equal height [syn: contour, contour line]

Definition of 'Contour line'

From: GCIDE
  • Contour \Con*tour"\, n. [F. contour, fr. contourner to mark the outlines; con- + tourner to turn. See Turn.]
  • 1. The outline of a figure or body, or the line or lines representing such an outline; the line that bounds; periphery. [1913 Webster]
  • Titian's coloring and contours. --A. Drummond. [1913 Webster]
  • 2. (Mil.) The outline of a horizontal section of the ground, or of works of fortification. [1913 Webster]
  • Contour feathers (Zool.), those feathers that form the general covering of a bird.
  • Contour of ground (Surv.), the outline of the surface of ground with respect to its undulation, etc.
  • Contour line (Topographical Suv.), the line in which a horizontal plane intersects a portion of ground, or the corresponding line in a map or chart. [1913 Webster]