What does the word elderberry mean?

Usage examples for elderberry

  1. " I'm afraid that owing to George and his confounded elderberry ink I didn't put my case quite as clearly as I ought to have done," Hugh went on, serenely. – Poor Relations by Compton Mackenzie
  2. Perfumes of elderberry and wild cucumber scented the air. – The Shape of Fear by Elia W. Peattie