Dِebut (noun) UK /ˈdeɪ.bju/ US /ˈdeɪ.bju/
To perform or appear in public, or to be shown or introduced to the public, for the first time.
The Broadway show debuted last year to great acclaim.
The museum recently debuted a brand-new, never-before-seen exhibit, “Living in Space.”
Debut can be a noun:
her debut (= first) album