n. 1 Protective armor for a horse's breast. 2 A fire arm (with a wheel lock) between the arquebuse and pistol, which was held against the breast when fired; to prevent injury from its recoil, the soldier was provided with a cushion or pad.[http://books.google.es/books?id=xl1HAAAAYAAJ&pg=PA131&dq=poitrinal&hl=en&sa=X&ei=pG29UsfaK-ew7Aa4_oGoCg&ved=0CD4Q6AEwAzgK#v=onepage&q=poitrinal&f=false Robert Burn (1842). ''A Naval and Military Technical Dictionary of the French Language: With Explanations of the Various Terms in English'', p. 131]
Usage examples of "poitrinal".
Its colour was set off by its red chanfrein, its nodding crest of red feathers, its broad poitrinal with red tassels, and its saddle with red housings.