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wafer

Flag: gbEnglishOxford Dictionary of English
wafer /ˈweɪfə /
▸ noun
1 a thin, light, crisp biscuit, especially one of a kind eaten with ice cream.
2 a thin piece of something:
wafers of smoked salmon.
▪ a thin disc of unleavened bread used in the Eucharist.
▪ Electronics a very thin slice of a semiconductor crystal used as the substrate for solid-state circuitry.
▪ (also wafer seal) a disc of red paper stuck on a legal document as a seal.
▪ historical a small disc of dried paste used for fastening letters or holding papers together.
▸ verb [with object] archaic fasten or seal (a letter or document) with a wafer.
– DERIVATIVES
wafery /ˈweɪf(ə)ri / adjective
– ORIGIN late Middle English: from an Anglo-Norman French variant of Old French gaufre (see goffer), from Middle Low German wāfel ‘waffle’; compare with waffle2.