On: An Illustrated History of objc_msgSend

[Someone]

The Hacker's Dictionary (http://www.dourish.com/goodies/jargon.html) calls them Brokets, as shorthand for "broken brackets".

And, by the way, the less pointy variant that is used in 'proper' typography is called a chevron or guillemet (http://en.wikipedia.org/wiki/Guillemet)