Hatching
Part of speech: noun
Definition: A method of shading areas of a drawing or diagram with fine parallel lines. A group of birds, reptiles, fish, insects, etc., which emerge from their eggs at the same time.
Part of speech: verb
Definition: To close with a hatch or hatches.
Hachure
Part of speech: noun
Definition: A line on a map indicating the steepness of a slope.