late 14c., indowen "provide an income for," from Anglo-French endover, from en- "in" (see en- (1)) + Old French douer "endow," from Latin dotare "to endow, bestow, portion," from dos (genitive dotis) "marriage portion," from PIE *do-ti, from root *do- "to give." Related: Endowed; endowing.
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Definitions of endowed from WordNet
provided or supplied or equipped with (especially as by inheritance or nature);
a well-endowed college
endowed by their Creator with certain unalienable rights