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A white lead pigment, sometimes used in cosmetics.
tr.v. ce·rused, ce·rus·ing, ce·rus·es
To treat (wood or a wooden object) with a white pigment to accentuate the grain.
[Middle English, from Old French, from Latin cērussa, perhaps from dialectal Greek *kēroessa, from feminine of *kēroeis, containing wax, waxy, from kēros, wax (ancient cosmetics being made from wax and pigments).]