WAFER

I. noun Etymology: Middle English, from Anglo-French ~, walfre, of Germanic origin; akin to Middle Dutch wafele waffle Date: 14th century 1. a thin crisp cake, candy, or cracker, a round thin piece of unleavened bread used in the celebration of the Eucharist, an adhesive disk of dried paste with added coloring matter used as a seal, 3. a thin disk or ring resembling a ~ and variously used (as for a valve or diaphragm), a thin slice of semiconductor (as silicon) used as a base for an electronic component or circuit, II. transitive verb (~ed; ~ing) Date: 1748 to seal, close, or fasten with a ~, to divide (as a silicon rod) into ~s