To Short

1. (transitive) To cause a short circuit in (something).
2. (intransitive, of an electrical circuit) To short circuit.
3. (transitive) To shortchange.
4. (transitive, informal) To provide with a smaller than agreed or labeled amount.
5. (transitive, business) To sell something, especially securities, that one does not own at the moment for delivery at a later date in hopes of profiting from a decline in the price; to sell short.
6. (obsolete) To shorten.