"Form of Heaven"
The name Heavyn is commonly a female name from the "American" origin.
Heavyn is a respelling of Heaven, the English noun used as a given name. The spelling replaces the -en ending with -yn, a substitution that also appears in other recent American respellings. The English noun heaven goes back to Old English heofon.
Heaven means "From the Heavens".
The pronunciation of Heavyn is HEV-en.