Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
accĭpĭter, tris (earlier also tĕris, Prisc. p. 695 P.), m. (f. Lucr. 4, 1006) [com. deriv. from accipio; see 2. acceptor; but cf. ὠκύπτερος, swift-winged], a general name for birds of prey, esp. those of the falcon kind, Plin. 10, 8, 9, § 21; Ter. Ph. 2, 2, 16; Lucr. 5, 107; Cic. N. D. 3, 19; Hor. Ep. 1, 16, 50 al.—