The term 'PEAK SIGHTER ZEBULON' is composed of four crossword solutions: PEAK, SIGHTER, ZEBULON, and PIKE. PEAK is a noun meaning the highest point of a mountain or hill. SIGHTER is a noun referring to a person who looks for something. ZEBULON is a proper noun, the name of a city in Georgia. Finally, PIKE is a noun meaning a long spear with a pointed head. Together, these words describe a person who looks for the highest point of a mountain or hill, likely with a long spear.