overlay

Short definition from Wiktionary

Verb

1. 1
   To lay, spread, or apply (something) over or across (something else); to overspread.
2. 2
   To overwhelm; to press excessively upon.
3. 3
   To lie over (someone, especially a child) in order to smother it; to suffocate.
4. 4
   To put an overlay on.
5. 5
   To bet too much money on.
6. 6
   simple past of overlie

Noun

1. 1
   An image to be overlaid on another; a superimposition or diapositive.
2. 2
   A piece of paper pasted upon the tympan sheet to improve the impression by making it stronger at a particular place.
3. 3
   Odds which are set higher than expected or warranted. Favorable odds.
4. 4
   A horse going off at higher odds than it appears to warrant, based on its past performances.
5. 5
   A decal attached to a computer keyboard to relabel the keys.
6. 6
   A block of program code that is loaded over something previously loaded, so as to replace the functionality.
7. 7
   A pop-up covering an existing part of the display.
8. 8
   A cravat.
9. 9
   A covering over something else.