monkey board
n.— «I had seen C.T. throw poultry off the windmill before, and although this practice was forbidden by his stern father, C.T. counted it a considerable thrill. Sometimes he caught white leghorn pullets and pitched them off the monkey board just below the mill blades, and they’d fly 200 feet or more.» —“C.T. taught me how to feel sins” by Leon Hale Houston Chronicle (Texas) Dec. 1, 1992. (source: Double-Tongued Dictionary)