1. adjective
a) Of or pertaining to the voice or speech; having voice; endowed with utterance; full of voice, or voices
To hill or valley, fountain, or fresh shade, / Made vocal by my song.
b) Uttered or modulated by the voice; oral; as, vocal melody; vocal prayer, vocal worship.
2. noun
a) A vocal sound; specifically, a purely vocal element of speech, unmodified except by resonance; a vowel or a diphthong; a tonic element; a tonic; distinguished from a subvocal, and a nonvocal
b) A man who has a right to vote in certain elections.
Wikipedia foundation.