Delineator

Noun

1. One who, or that which, delineates. A road safety marker that indicates where traffic should go. One who makes line drawings. One who depicts or describes a character.
2. A road safety marker that indicates where traffic should go.
3. One who makes line drawings.
4. One who depicts or describes a character.
5. A device to aid in the delineation of something. A perambulator which records distances and delineates a profile, as of a road. Any of various devices that aid a person in copying the outlines of a drawing or object, including the ability to enlarge or shrink the image.