The Oxford Thesaurus An A-Z Dictionary of Synonyms - pall° n.

1) shroud, covering, mantle, cloth, veil: A black velvet pall covered the coffin. 2) gloomy or melancholy or sombre or grave or depressing air or mood or atmosphere; damper, cold water, Colloq wet blanket: The recently uncovered scandals have cast a pall over his successes in office.