Joy is defined as happiness and delight.(noun)
An example of joy is what you feel on your wedding day.
See joy in Webster's New World College Dictionary
Origin: ME joie < OFr < LL gaudia, orig. pl. of L gaudium, joy < IE base *gāu-, to rejoice > Gr gēthein, to rejoice, MIr gūaire, noble
See joy in American Heritage Dictionary 4
Origin: Middle English joie
Origin: , from Old French
Origin: , from Latin gaudia
Origin: , pl. of gaudium, joy
Origin: , from gaudēre, to rejoice; see gāu- in Indo-European roots.
Learn more about joy