wafer
1. wa.fer \'wa--f*r\ n [ME, fr. ONF waufre, of Gmc origin; akin to MD wafel, wafer w]affle 1a: a thin crisp cake or cracker 1b: a round thin piece of unleavened bread in the Eucharist 2: an adhesive disk of dried paste with added coloring matter used as a sea l 3: a thin disk or ring resembling a wafer and variously used (as for a valv e or diaphragm) 2. wafer \-f(*-)rin\ vt or wa.fer.ing : to seal, close, or fasten with a wafer