Segestanus
Could not find Segestani in Logeion dictionaries.
Segestani Proper-name adjective: masculine vocative plural, Proper-name adjective: neuter genitive singular, Proper-name adjective: masculine nominative plural, Proper-name adjective: masculine genitive singular of Segestanus
Sĕgestānus, a, um, v. 1. Segesta.