What is Screenshot?
1.
a picture of a piece (or whole) of your computer desktop.
Valuable in explaining to people how to do different stuff in applications, or just sort of generally cool.
Also, valuable when designing web pages as a person with one computer, so your Windows friend can send you screenshots of what stuff looks like in IE (or, if you're on the dark side, so your Mac friend can send pics of what it looks like in Safari)....
Person 1: Hey, I have this awesome new app on my comp. Wanta come see it sometime?
Person 2: Nah, just email me a screenshot.
See
