Nouns

(n)voicethe distinctive quality or pitch or condition of a person's speech“A shrill voice sounded behind us”
(n)voice, vocalization, vocalisation, vocalism, phonation, voxthe 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”
(n)voicea sound suggestive of a vocal utterance“the noisy voice of the waterfall”, “the incessant voices of the artillery”
(n)articulation, voiceexpressing in coherent verbal form“the articulation of my feelings”, “I gave voice to my feelings”
(n)voicea means or agency by which something is expressed or communicated“the voice of the law”, “the Times is not the voice of New York”, “conservatism has many voices”
(n)voicesomething suggestive of speech in being a medium of expression“the wee small voice of conscience”, “the voice of experience”, “he said his voices told him to do it”
(n)voice(metonymy) a singer“he wanted to hear trained voices sing it”
(n)spokesperson, interpreter, representative, voicean advocate who represents someone else's policy or purpose“the meeting was attended by spokespersons for all the major organs of government”
(n)voicethe ability to speak“he lost his voice”
(n)voice(linguistics) the grammatical relation (active or passive) of the grammatical subject of a verb to the action that the verb denotes
(n)part, voicethe melody carried by a particular voice or instrument in polyphonic music“he tried to sing the tenor part”
(n)voiceA term used in phonetics and phonology to characterize speech sounds, with sounds described as either voiceless (unvoiced) or voiced.

Verbs

(v)voicegive voice to“He voiced his concern”
(v)voice, sound, vocalize, vocaliseutter with vibrating vocal chords