Definition of a-flying in English:

a-flying

adjective

  • In predicative use: flying, aflight. Also as adverb: in or into a state of flight, into the air.

Origin

Mid 17th century; earliest use found in Robert Herrick (bap. 1591, d. 1674), poet. From a + flying.

Pronunciation:

a-flying

/əˈflʌɪɪŋ/