- 1[intransitive] blanch (at something) (formal) to become pale because you are shocked or frightened He blanched visibly when he heard the news.
- 2[transitive] blanch something to prepare food, especially vegetables, by putting it into boiling water for a short time Blanch the peas quickly before you freeze them.
NAmE//blæntʃ//Verb Forms present simple I / you / we / they blanch
he / she / it blanches
past simple blanched
-ing form blanching