c. 1300, from Old French voieul (Modern French voyelle), from Latin vocalis, in littera vocalis, literally "vocal letter," from vox (genitive vocis) "voice," from PIE root *wekw- "to speak." Vowel shift in reference to the pronunciation change between Middle and Modern English is attested from 1909. The English record-holder for most consecutive vowels in a word is queueing.
It forms all or part of: advocate; avocation; calliope; convocation; epic; equivocal; equivocation; evoke; invoke; provoke; revoke; univocal; vocabulary; vocal; vocation; vocative; vociferate; vociferous; voice; vouch; vox; vowel.
It is the hypothetical source of/evidence for its existence is provided by: Sanskrit vakti "speaks, says," vacas- "word;" Avestan vac- "speak, say;" Greek eipon (aorist) "spoke, said," epos "word;" Latin vocare "to call," vox "voice, sound, utterance, language, word;" Old Prussian wackis "cry;" German er-wähnen "to mention."
colloquial modern alternative spelling of shit (n.), attested by c. 1740, preserving the original vowel length of the Old English verb.
"one who inserts the vowel points in (Hebrew) writing," 1723, from Latin punctum "a point" (from nasalized form of PIE root *peuk- "to prick").
"short horizontal line placed over a vowel to indicate length," 1827, from Latinized form of Greek makron, neuter of makros "long" (from PIE root *mak- "long, thin").