Used as a participial adjective derived from the verb "endow", typically in constructions like "richly endowed with" or "well-endowed".
Definitionen
Provided with or possessing a particular quality, resource, or asset (often followed by "with"). The region is richly endowed with natural resources.
Supported financially by an endowment; having a permanent source of income. The museum is generously endowed by private donors.
(Informal, of a person) Having large sexual organs or breasts. Rumor had it that he was exceptionally well endowed.