1. an illness
2. pertaining to, or having a lot of crust
3. dirty, old, raggedy
-She suffers from crustification.
-The short young man had a severe form of crustification.
-The girl walked crustily down the street.
-The man had crustified turd on his brand new sneakers.
-The crusty girl had a weave that resembled a dirty, old, used mop.