elephant-tusk n. An annual of the southern U.S. and Mexico (Proboscidea louisianica) having large whitish or yellowish flowers mottled with purple and a long curving beak.
... the morning, while the thick white mist is still hanging athwart the forest, a drummer is kicked out of bed by a white foot and bidden to sound "Reveille." Then there is a din of elephant-tusk horns and the clatter of the elephant-hide drums. The camp is astir, and it all seems as if the men are as smart and as disciplined as their brother warriors in Aldershot or Shorncliffe. But the negroes ... — The Story of Baden-Powell - 'The Wolf That Never Sleeps' • Harold Begbie