wafer Definition

wafer
noun

1. A thin light finely layered kind of biscuit, baked between wafer-irons or wafer-tongs, served eg with ice cream.
2. Christianity.
A thin disc of unleavened bread or rice paper served to communicants at Holy Communion.
3. A thin disc of adhesive material used instead of a seal on documents, etc.
4. computing.
A thin disc of silicon from which chips are cut.

verb

wafered, wafering
1. To close, fasten or stick with a wafer.

Derivative: wafery
adj

Etymology: 14c: Dutch, a variant of wafel waffle.