(phonetics) Any vowel sound produced in the front of the mouth. Open English WordNet

A front vowel is a class of vowel sounds used in some spoken languages, its defining characteristic being that the highest point of the tongue is positioned as far forward as possible in the mouth without creating a constriction that would otherwise make it a consonant. Wikipedia

A class of vowel sounds, in linguistics Wikipedia Disambiguation

Type of vowel sound Wikidata

A vowel produced in the front of the mouth. OmegaWiki

Any vowel sound produced in the front of the mouth. Examples: "a" in “man” and "e" in “gel”. Wiktionary

Any vowel sound produced in the front of the mouth. Wiktionary (translation)