RhymeZone: ostent definitions

Definitions of ostent:

verb: (transitive, intransitive, obsolete) To make an ambitious display of; to exhibit or show boastingly; to ostentate.
noun: (archaic, rare) A display, an exhibition; an appearance, a manifestation.
noun: A boastful, ostentatious display or exhibition.
noun: (archaic, rare) A portent, a token.
noun: (obsolete) A minute (60 seconds).

(Definitions from Wiktionary)