side plate
US /ˈsaɪd pleɪt/
UK /ˈsaɪd pleɪt/

1.
a small plate for bread or salad, used at a meal in addition to the main plate
:
•
Please set a side plate for each guest.
•
She served the bread on a small side plate.
a small plate for bread or salad, used at a meal in addition to the main plate