blanch
v.
1
c.1400, transitive, "to make white, turn pale," from Old French blanchir "to whiten, wash," from blanc "white" (11c.; see blank, adj.). Originally "to remove the hull of (almonds, etc.) by soaking." Intransitive sense of "to turn white" is from 1768. Related: Blanched; blanching.
2
"to start back, turn aside," 1570s, variant of blench. Related: Blanched; blanching.
〔李〕[blanch(blanc)] v.使变白； 漂白 ←blanc (F blanc)=white 白