| insessores | (n) a bird with feet adapted for perching (as on tree branches); this order is now generally abandoned by taxonomists, Syn. order Insessores, perching bird, percher |
| Insessores | ‖n. pl. [ NL., fr. L. insessor, lit., one who sits down, fr. incidere. See Insession. ] (Zool.) An order of birds, formerly established to include the perching birds, but now generally regarded as an artificial group. [ 1913 Webster ] |