1a large flat dish or plate for serving food: [with modifier]:arrange the fruit on a serving platter a quantity of food served on a platter:huge platters of cooked meat a meal or selection of food placed on a platter, especially one served in a restaurant:dinner was a bowl of soup and a cold platter
2something shaped like a platter, in particular: informal
, dated a record:dig out some old platters
the rotating metal disc forming the turntable of a record player. Computing a rigid rotating disk on which data is stored in a disk drive; a hard disk (considered as a physical object).