(noun)
a general characteristic, structure, or form of something (usually used as "contours");
e.g. This novel bears the contours of many famous ones.
(noun)
the ways in which something changes or varies meaningfully, especially the pattern of tones in speech or the pitch of music;
e.g. Here is a description of the contour of this piece of music.
(adjective)
forming ridges and furrows to fit along the form of something, or made to fit something's form or shape;
e.g. I have a contour chair at my desk to support my back.
(verb)
to shape something into a particular form, typically so that it fits into the form of something else;
e.g. She used her hands to contour the pieces so that they fit together.
(verb)
to use make-up to shade certain parts of the face in order to enhance or accentuate the shape or structure of the face;
e.g. Next, you must contour your face to make your cheekbones more prominent.
(verb)
to construct something along the lines or outline of some other structure;
e.g. Both of these roads contour the coastline.