White; pale.Same as blench.literally, pale fever; hence, to have the blanch fever is either to be in love or to be sick with wantonness.n. Same as blanc, 3.n. A white spot on the skin.n. In mining, a piece of ore found isolated in the hard rock.To make white; whiten by depriving of color; render colorless: as, to blanch linen.In horticulture, to whiten or prevent from becoming green by excluding the light: a process applied to the stems or leaves of plants, such as celery, lettuce, sea-kale, etc.To make pale, as with sickness, fear, cold, etc.Figuratively, to give a fair appearance to, as an immoral act; palliate; slur; pass over.In cookery, to soak (as meat or vegetables) in hot water, or to scald by a short, rapid boiling, for the purpose of producing firmness or whiteness.In the arts, to whiten or make lustrous (as metals) by acids or other means; also, to cover with a thin coating of tin.Synonyms and Etiolate, etc. See whiten.To become white; turn pale.To shun or avoid, as from fear; evade.To shrink; shift; equivocate.n. Lead ore mixed with other minerals.To blanch silver, to oxidize copper superficially, when present in an alloy with silver, by heating to redness in the air, and then dissolving out the oxid of copper by dilute sulphuric acid, thus leaving the surface of the object with the white appearance of pure silver.