Cowcatcher n. A strong inclined frame, usually of wrought-iron bars, in front of a locomotive engine, for catching or throwing off obstructions on a railway, as cattle; the pilot. (U.S.)
... the train, and invited Miss Dwyer to come thither and see the scenery. Whether she had wanted to pardon him or not, he knew very well that this was a temptation which she could not resist, for the rear platform was the best spot for observation on the entire train, unless it were the cowcatcher of the locomotive. ... — Deserted - 1898 • Edward Bellamy