### Clue: Small flat dish slip in fruit (4-1-5)
### Answer: PIED-A-TERRE 
 ### Explanation: Definition: Small flat
 PIE(a dish/a baked food item) + [ ERR(to slip/to make an error) **contained in**(in) DATE(the fruit of the date palm) ].
Defn: …/apartment kept for occasional use.