01 a. Having the nature of crust; pertaining to a hard covering; as, a crusty coat; a crusty surface or substance.
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1.
Having the nature of crust; pertaining to a hard covering; as, a crusty coat; a crusty surface or substance.
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2.
Having a hard exterior, or a short, rough manner, though kind at heart; snappish; peevish; surly.“Thou crusty batch of nature, what's the news?” — Shak.