Lewis & Short

scŏpus, i, m., = σκοπός, a goal, target: in pueri procul stantis, praebentisque pro scopo dispansam dextrae manūs palmam, sagittas direxit, Suet. Dom. 19 (dub.; Roth, scopulo; cf. σκοπός, in trop. sense, Cic. Att. 8, 11, 2).