### Clue: Fancy one after church before mother rings up again? (7)
### Answer: CHIMERA 
 ### Explanation: Definition: Fancy
  [I(Roman numeral for "one") **placed below**(after, in a down clue) CH(abbrev. for $$ch$$urch, the building)] **placed above**(before, in a down clue) [MA(mother,mama) **containing**(rings) **reversal of**(up, in a down clue) RE(the prefix signifying a repeat action,again)].  A somewhat preposition-heavy construction. 
Answer: A wild and unrealistic dream or notion,a fancy.