IPA: /ˈplætərfəl/
KK: /ˈplætərfəl/
A quantity of food or items that can fill a platter.
The buffet offered a platterful of delicious dishes for the guests.
Platterful is formed from "platter" (from Old French *plat*, meaning a flat dish) and "-ful" (meaning full of). The word "platterful" means full of platters or having the quality of being a platter.
Think of a 'platter' as a flat dish that holds food, and '-ful' means full of — so platterful describes something that is full of platters.