Noah Webster's New International Dictionary of the English Language

1. (n.) The act of representing, portraying, or describing, as by lines, diagrams, sketches, etc.; drawing an outline; as, the delineation of a scene or face; in drawing and engraving, representation by means of lines, as distinguished from representation by means of tints and shades; accurate and minute representation, as distinguished from art that is careless of details, or subordinates them excessively.

2. (n.) A delineated picture; representation; sketch; description in words.