n. & v.
n. 1 a crown or headband worn as a sign of sovereignty. 2 a wreath of leaves or flowers worn round the head. 3 sovereignty. 4 a crowning distinction or glory.
v.tr. (esp. as diademed adj.) adorn with or as with a diadem.
[ ME f. OF diademe f. L diadema f. Gk diadema (as DIA-, deo bind) ]