hachure

n. hatching, parallel lines drawn close together to produce the effect of shading, short shading line

v. shade or draw parallel lines to produce the effect of shading

Noun
1. shading consisting of multiple crossing lines
(synonym) hatch, hatching, crosshatch
(hypernym) shading
(derivation) hatch

n. tint

v. hatch, shade

(n.)
A short line used in drawing and engraving, especially in shading and denoting different surfaces, as in map drawing. See Hatching.
  

Any series of lines used on a map to indicate the general direction and steepness of slopes. The lines are short, heavy, and close together for steep slopes; longer, lighter, and more widely spaced for gentle slopes.