Lewis & Short

pĕtăsātus, a, um, adj. [petasus], with a travelling-cap on, i. e. ready for a journey (class.): petasati veniunt, Cic. Fam. 15, 17, 1; Varr. ap. Non. 4, 319; Suet. Aug. 82; Hier. prooem. in Zachar. 1, 2.