n. 1. The state or quality of having crust or being like crust; hardness. [ 1913 Webster ]
2. The quality of being crusty or surly. [ 1913 Webster ]
Old Christy forgot his usual crustiness. W. Irving. [ 1913 Webster ]
n. Dexterity in devising and effecting a purpose; cunning; artifice; stratagem. [ 1913 Webster ]
He taketh the wise in their own craftiness. Job. v. 13. [ 1913 Webster ]