Noun

1. a large metal cooking pot with a tight-fitting lid
2. a portable oven consisting of a metal box, with shelves, placed before an open fire
3. a protective cover for electrical contacts on a railway coupler. Particularly but not exclusively used on the London Underground
4. a prank in which one farts in bed and pulls the bedclothes over one's bed-mate's head
5. a room full of marijuana smoke
6. the very end of a Dutch Masters cigar that has been rerolled with marijuana. This usage of the term is said to originate in New Brunswick, New Jersey.