### Clue: Set to trap Lancashire opener, old spinner a long way off? (5)
### Answer: PLUTO 
 ### Explanation: Definition: spinner a long way off
 [ PUT(to set/to place on) **containing**(to trap) **1st letter of**(… opener) "Lancashire" ] + O(abbrev. for "old").
Defn: A dwarf (not a full-fledged) planet/spinning body in outer space.