al vol

== Catalan == === Etymology === Compare French au vol. === Pronunciation === IPA(key): (Central) [əl ˈβɔl] IPA(key): (Balearic) [əl ˈvɔl] IPA(key): (Valencia) [al ˈvɔl] === Adverb === al vol in flight, on the wing, on the fly (figurative) in passing