资料来源 : pyDict

行首额外音节

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

Anacrusis \An`a*cru"sis\, n. [Gr. ?, fr. ? to push up or back; ?
   + ? to strike.] (Pros.)
   A prefix of one or two unaccented syllables to a verse
   properly beginning with an accented syllable.