A-flat

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A tone one semitone below A, between G and A, denoted A♭.

    "The bassoon came in on a low A-flat."

  2. 2
    Alternative spelling of A-flat. alt-of, alternative, uncountable
  3. 3
    A key or other mechanism for producing an A-flat.

    "I had to take it to the shop because the A-flat was stuck."

  4. 4
    The key of A-flat major.

    "We will now hear the third sonata, in A-flat."

Example

More examples

"The bassoon came in on a low A-flat."

Related phrases

A-flat majorA-flat minor

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.