A vocal syllable is a unit of sound that is produced by the human voice. It is composed of a single vowel sound and may be accompanied by one or more consonants. The term 'vocal syllable' is often used in linguistics to refer to the smallest unit of speech that can be uttered independently. The crossword solution for the term 'vocal syllable' is TRA, which is an abbreviation for the Latin word 'trahere, ' meaning 'to draw out.'