### Clue: Wiped out after placing a thousand on a financial derivative (5)
### Answer: KAPUT 
 ### Explanation: Definition: Wiped out
 K(abbrev. for one thousand) **plus**(… thousand on) + PUT(aka a "put option", where a buyer of the option has the right but not the obligation to sell at a specified price and date, a financial instrument , which latter could be a derivative, whose value, as the name indicates, is dependent on the value of other specified financial instruments ).
Answer: Demolished;ruined.