icedEnglishOxford New American Dictionaryiced /īst, aɪst / ▸ adjective [attributive] 1 (of a drink or other liquid) cooled in or mixed with pieces of ice: iced coffee. ▪ (of a surface or object) covered or coated with ice: we played hockey on the iced schoolyard. 2 (of a cake or cookie) decorated with icing.