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Definition of waffle. : a crisp cake of batter baked in a waffle iron.
The verb sense to smash derives from the manner in which waffle-batter is smashed into its shape between the two halves of a waffle iron, and the sense to press a waffle pattern into derives from the pattern the waffle-iron-halves impart. Noun . waffle (plural waffles) A flat pastry pressed with a grid pattern.