make white or pale by extracting colour

the cold light blanched her face

flinch or grow pale from shock, fear, or a similar emotion

he visibly blanched at this reminder of mortality

briefly immerse (an item of food) in boiling water, especially as a technique for removing the skin from nuts or fruit or for preparing vegetables for further cooking

blanch the almonds and grind them to a paste, adding a little water

I blanched the carrots for a couple of minutes before roasting them