资料来源 : Webster's Revised Unabridged Dictionary (1913)

D'ebut \D['e]`but"\, n. [F. d['e]but, prop., the first cast or
   throw at play, fr. but aim, mark. See {Butt} an end.]
   A beginning or first attempt; hence, a first appearance
   before the public, as of an actor or public speaker.