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cŭcūlus (cŭcŭlus, Auct. Carm. Philom. 35), i, m. [Sanscr. ku-, to cry; cf. κωκύω], a cuckoo, Plin. 18, 26, 66, § 249; as a term of reproach, Plaut. As. 5, 2, 73; id. Ps. 1, 1, 94; esp. of foolish men, id. Trin. 2, 1, 18; and of dilatory husbandmen, who are not through with their pruning until the cuckoo is heard (after the vernal equinox), Plin. 1. 1.; Hor. S. 1, 7, 31; cf. Plin. 18, 26, 66, § 249; Voss ad Verg. G. 2, 403.