noun
A performer's first performance to the public, in sport, the arts or some other area.
(also attributive) The first public presentation of a theatrical play, motion picture, opera, musical composition, dance, or other performing arts piece.
The first appearance of a debutante in society.
(Philippines) The coming-of-age celebration of a woman's eighteenth birthday.
verb
(transitive, chiefly US) to formally introduce, as to the public
(intransitive) to make one's initial formal appearance