The old farmer waved his hat and said, "The herd went that-away."

that-away 是由 that（那个）和 away（离开）组成的复合词，在口语中表示"往那个方向"的意思，带有非正式和乡村口语色彩。这种组合方式常见于美国西部牛仔等乡村用语中。