Lewis & Short

Pylus and Pylos, i, f., = Πύλος,

  1. I. the name of three cities of the Peloponnesus, of which one was in Arcadia; one in Messenia, now Old Navarino, Liv. 27, 30; Mel. 2, 3, 9; and the other in Triphylia, the southern province of Elis, the abode of Nestor, whence Pylos Nestorea, Sen. Herc. Fur. 561; sometimes confounded with Pylos in Messenia, where Neleus reigned: nos Pylon, antiqui Neleïa Nestoris arva, Misimus, Ov. H. 1, 63; cf. also: Nelea Pylos, id. M. 6, 418: Nestoria, Sen. Herc. Fur. 561.
    Hence,
  2. II. Pylĭus, a, um, adj., of or belonging to Pylos, Pylian, freq. poet. for Nestorian: agri, Pylian, Messenian, Ov. M. 2, 684: Nestor, id. P. 1, 4, 10; id. Am. 3, 7, 41; Hor. C. 1, 15, 22: rector, i. e. Nestor, Sil. 7, 597: dies, the days, i. e. age of Nestor, Ov. Tr. 5, 5, 62; hence, transf.: senecta, i. e. very great age, Mart. 8, 2.
    1. B. Subst.
      1. 1. Pylĭus, ii, m., the Pylian, i. e. Nestor, Ov. M. 8, 365; 12, 537; 542.
      2. 2. In plur.: Pylĭi, ōrum, m., the inhabitants of Pylos, the Pylians, Mel. 2, 3, 9.