endowable /ɪnˈdaʊ̯əbl̩/ adjective2 •(rare) Eligible for endowment; able to be endowed or endowed upon.The following table shows, arranged according to colleges and according to departments, the various amounts received—viz., endowable fees, and endowments paid thereon. — 1908 •(historical) Entitled to receive or eligible for dower; dowable.By the provisions of the common law, a widow was endowable of all the lands of which her husband was seized during coverture. — 1839