Wordnet 3.0
NOUN (1)
1. 
 the sound made by the vibration of vocal folds modified by the resonance of the vocal tract; 
- Example: "a singer takes good care of his voice"- Example: "the giraffe cannot make any vocalizations"[syn: voice, vocalization, vocalisation, vocalism, phonation, vox]
WordNet (r) 3.0 (2006):
vocalisation
    n 1: the sound made by the vibration of vocal folds modified by
         the resonance of the vocal tract; "a singer takes good care
         of his voice"; "the giraffe cannot make any vocalizations"
         [syn: voice, vocalization, vocalisation, vocalism,
         phonation, vox]