1. without a plate or plates; not having a plate
Usage: common in technical and everyday contexts
2. of a brake system or mechanical component: designed or operating without a traditional plate mechanism
Usage: technical; automotive and engineering contexts

Examples

• The restaurant served the meal on a plateless wooden board.
• Modern plateless brakes offer improved performance and durability.
• She preferred eating plateless, using a simple napkin instead.
• The new design features a plateless clutch system.
• Plateless construction reduces weight in the machinery.