noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The harmonica. dated
2. 2
   An acoustic apparatus that produces a musical note when a long dry tube, open at both ends, is held over a jet of burning hydrogen. historical

Synonyms

All synonyms

harmonicaharphydrogen harmonicon

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