1. The state or quality of having crust or being like crust; hardness 
2. The quality of being crusty or surly

Derived forms: crustinesses

• blue cohosh
• blue columbine
• blue copperas
• blue crab
• blue curls
• blue daisy
• blue darter
• blue devil
• blue devils
• blue elder
• blue elderberry
• blue false indigo
• blue fig
• blue flag
• blue fleabane
• blue fox
• blue funk
• blue goose
• blue grama
• blue gum
• blue jack
• blue jasmine
• blue jay
• blue jean
• blue jessamine