from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a map drawn from observation (rather than from exact measurements) and representing the main features of an area
Sorry, no etymologies found.
a sketch map of Abyssinia that he had drawn, on which the marks he had made to represent mountain-ranges, looked so much like scorpions that I could not resist the temptation of writing over them, scorpion No. 1, scorpion No. 2, etc.