adjective
(obsolete or poetic) Overtaken by night; especially of a traveller, etc.: caught out by oncoming night before reaching one's destination.
(obsolete) Plunged into darkness.
(figuratively) Lacking education or knowledge; unenlightened; also, lacking morality; immoral, unscrupulous.
(figuratively, obsolete) Difficult to understand; abstruse, obscure.
verb
simple past and past participle of benight