<p><strong>Verb</strong></p><ul><li>To lay or place (one thing) over or upon another.</li><li>To cover, overspread, or surmount with something.</li><li>To finish with a layer or applied decoration of something: wood richly overlaid with gold.</li><li>Printing: to put an overlay upon.</li></ul><p><strong>Noun</strong></p><ul><li>Something laid over something else; covering.</li><li>A layer or decoration of something applied: an overlay of gold.</li><li>Printing: a shaped piece of paper, or a sheet of paper reinforced at the proper places by shaped pieces, put on the tympan of a press to increase or equalize the impression.</li><li>A method of preparing copy for multicolor printing, in which matter for each color is prepared on a transparent sheet that is placed over a key plate, usually the one to be printed in black.</li><li>The sheet or sheets so prepared.</li><li>A sheet of transparent paper placed over a photograph, a dummy, or other artwork for noting corrections, instructions, mechanical separations, etc.</li><li>Computers: software or data in external storage and brought into main storage for execution by replacing or augmenting software or data already there.</li><li>A transparent sheet giving special military information not ordinarily shown on maps, used by being placed over the map on which it is based.</li><li>A decorative piece of leather or other material stitched on a shoe.</li><li>Scot: a cravat.</li></ul>