encrust (v.)

also incrust, 1640s, from Middle French encruster, incruster (Modern French encroûter), from Latin incrustare "to coat or cover with crust," from in- (from PIE root *en "in") + crusta "rind, crust, shell, bark" (from PIE root *kreus- "to begin to freeze, form a crust"). Related: Encrusted; encrusting.