Lewis & Short

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Drĕpăna, ōrum, n., = Δρέπανα, a town on the western coast of Sicily, now Trapani, Cato acc. to Serv. Verg. A. 3, 707, Plin. 3, 8, 14, § 90; Liv. 28, 41; Flor. 2, 2, 12.
Called also Drĕpănum, Verg. A. 3, 707, and Drĕpăne (es), f., Sil. 14, 269. The promontory in its neighborhood is called Promontorium Drepanum, Plin. 3, 8, 14, § 88.
Drĕpănĭtānus, a, um, of Drepanum: pupilus, Cic. Verr. 2, 2, 57, § 140.
Plur. as subst.: Drĕpănĭtāni, the inhabitants of the promontory of Drepanum, Cic. Verr. 2, 4, 17; Plin. 3, 8, 14, § 91.