n.
a container for biodegradable waste.
Type: 5. Frequency — The term is a Canadianism in the North American context (see Chart 1). Green bin programs, which are used for composting, are found in many urban areas in Canada (see Image 1). First used for special collection of biodegradables (see the 1980 quotation), curb-side collection was rolled out in the late 1980s/early 1990s in some Canadian municipalities.
See also: blue box blue bin redemption centre
Images:

Image 1: Green bin in Toronto. Source: Wikimedia Commons, Creative Commons. Photo: NotYouHaha 
Chart 1: Internet Domain Search, 13 Aug. 2012