They've taken food off plates and rinsed out (6)
I believe the answer is:
diners
'they've taken food off plates' is the definition.
I can't tell whether this defines the answer.
'rinsed out' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'rinsed' anagrammed gives 'DINERS'.
'and' is the link.
Can you help me to learn more?
(Other definitions for diners that I've seen before include "Eaters of a meal" , "Restaurants" .)