Definitions
1.nounA light, thin, flat biscuit/cookie.
2.noun(christianity) A thin disk of consecrated unleavened bread used in communion.
3.nounA soft disk originally made of flour, and later of gelatin or a similar substance, used to seal letters, attach papers etc.
4.nounA thin disk of silicon or other semiconductor on which an electronic circuit is produced.
5.verbTo seal or fasten with a wafer.