An evens bet, apparently. That is, the bookie will return your stake of �10.00, say, together with �10.00 of his if your bet wins. Click http://www.smartgambler.com.au/gambling_forums/vie wtopic.php?topic=5085&forum=2&7
and scroll about � of the way down the page to an entry from 'Crash' to see where I got the information. (I can't confirm it, however, never having heard the word before.)