The name Jacy is a popular name and parents adore it due to its significance on the character. Jacy name meaning is Blackfoot. The moon. This is one of the more modern-sounding baby boy names and has a cool meaning. and it associate lucky number is 3. Jacy is a versatile name that has been popular in the English-speaking world for many decades and Jacy name meaning is also deep. Find out the pronunciation of Jacy and other well-known baby names that sound similar to Jacy in the United States of America (USA).