[de.but] n [F debut, fr. debuter to begin, fr. MF desbuter to play first, fr. des- de- + but starting point, goal--more at butt] (1751) 1: a first appearance "made her singing ~"
2: a formal entrance into society
[2]debut vi (1830): to make a debut ~ vt: to present to the public for the first time: introduce