'Crusty' definitions:

Definition of 'crusty'

From: WordNet
adjective
Having a hardened crust as a covering [syn: crusted, encrusted, crusty, crustlike]
adjective
Brusque and surly and forbidding; "crusty remarks"; "a crusty old man"; "his curmudgeonly temper"; "gruff manner"; "a gruff reply" [syn: crusty, curmudgeonly, gruff, ill- humored, ill-humoured]

Definition of 'Crusty'

From: GCIDE
  • Crusty \Crust"y\ (-[y^]), a.
  • 1. Having the nature of crust; pertaining to a hard covering; as, a crusty coat; a crusty surface or substance. [1913 Webster]
  • 2. [Possibly a corruption of cursty. Cf. Curst, Curstness.] Having a hard exterior, or a short, rough manner, though kind at heart; snappish; peevish; surly. [1913 Webster]
  • Thou crusty batch of nature, what's the news? --Shak. [1913 Webster]