The top of a desk.
Computer Science The background image of a display screen, on which windows, icons, and other graphical items appear.
Designed for use on a desk or table: a desktop telephone; a desktop computer.
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.