plangent

/ˈplændʒənt/
adjective
  1. Making a loud, deep, and sad sound, like a bell or a wave.
    • A plangent melody drifted from the church organ, filling the evening air.
    • The plangent cry of the foghorn warned ships of the rocky coast.
    • The plangent roar of the waterfall could be heard from miles away.