wafer UK /ˈweɪ̯fəː/US /ˈweɪ̯fɚ/noun 4verb 1forms 3 noun4 •A light, thin, flat biscuit/cookie. •A thin disk of silicon or other semiconductor on which an electronic circuit is produced. •A thin disk of consecrated unleavened bread used in communion. •A soft disk originally made of flour, and later of gelatin or a similar substance, used to seal letters, attach papers etc. verb1 •To seal or fasten with a wafer.[M]y Father, who knew he was well, wafered the paragraph upon a sheet of paper, and sent to his Lodgings. — 1775 formswafered · wafering · wafers
