Dish quietly departed (5)
I believe the answer is:
Here is my best explanation:
'dish' is the definition.
(plate is a kind of dish)
'quietly departed' is the wordplay.
'quietly' becomes 'p' (p for piano and quiet).
'departed' becomes 'late' (I've seen this before).
(Other definitions for plate that I've seen before include "horseshoe", "Dish for food", "Coat with metal", "Shallow dish", "Flat dish for food", "Cover with metal", "Shallow vessel", "This glass is thick as for shop window", "Leapt (anag.)" and "Salver".)