'Falco aesalon' definitions:

Definition of 'Falco aesalon'

From: GCIDE

Merlin \Mer"lin\, n. [OE. merlion, F. ['e]merillon; cf. OHG. smirl, G. schmerl; prob. fr. L. merula blackbird. Cf. Merle.] (Zool.) A small European falcon (Falco columbarius, syn. {Falco lithofalco}, or Falco aesalon). In North America called also pigeon hawk. [1913 Webster +PJC]