['dʒә:ˏfɔ:lkәn]
n.
一种鹰

[ noun ]
large and rare Arctic falcon having white and dark color phases
<noun.animal>

Gerfalcon \Ger"fal`con\, n. (Zo["o]l.)
See {Gyrfalcon}.

Gyrfalcon \Gyr"fal`con\ (j[~e]r"f[add]`k'n), n. [OE. gerfaucon,
OF. gerfaucon, LL. gyrofalco, perh. fr. L. gyrus circle +
falco falcon, and named from its circling flight; or cf. E.
gier-eagle. See {Gyre}, n., {Falcon}.] (Zo["o]l.)
One of several species and varieties of large Arctic falcons,
esp. {Falco rusticolus} and the white species {Falco
Islandicus}, both of which are circumpolar. The black and the
gray are varieties of the former. See Illust. of {Accipiter}.
[Written also {gerfalcon}, {gierfalcon}, and {jerfalcon}.]