(rare, transitive, intransitive) To make or become senior. / (obsolete, intransitive) To exercise authority; to rule; to lord it.

plural of seniority

An old person, variously considered to be a person over fifty, fifty-five, sixty, or sixty-five years of age.

A form of dramatic art in which older adults perform.

(humorous) A brief interval of forgetfulness or inattention.

(zoology) In zoological nomenclature, a name which describes the same taxon as one or more subsequently published names.

plural of senior synonym

(finance) A bond that takes priority for receipt of principal and interest over other debt securities sold by the issuer in the event the issuer goes bankrupt.

(baseball) The National League, the older of Major League Baseball's two leagues.

Used other than figuratively or idiomatically: see senior, hurling. / (Ireland, politics, figuratively) serious, difficult, important business; hardball