[from the traditional Czechoslovak method of assassinating prime ministers, via SF fandom]
n. 1. Proper karmic retribution for an incorrigible punster.
"Oh, ghod, that was *awful*!"
"Quick! Defenestrate him!"
2. The act of exiting a window system in order to get better response time from a full-screen program. This comes from the dictionary meaning of 'defenestrate', which is to throw something out a window.
3. The act of discarding something under the assumption that it will improve matters.
"I don't have any disk space left."
"Well, why don't you defenestrate that 100 megs worth of old core dumps?"
4. [proposed] The requirement to support a command-line interface.
"It has to run on a VT100."
"Curses! I've been defenestrated!"