0 a piece of paper that you are given by a shop when something that is advertised for sale at a certain price is not available. This piece of paper allows you to buy the product at the advertised price when it becomes available.
1 a part of a ticket to a game, activity, etc., that can be used later if bad weather prevents the original event from happening
2 an offer or request to do or get something at a later time than was originally intended:
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.