From The Collaborative International Dictionary of English v.0.48 [gcide]:
Gannet \Gan"net\, n. [OE. gant, AS. ganet, ganot, a sea fowl, a
fen duck; akin to D. gent gander, OHG. ganazzo. See Gander,
Goose.] (Zool.)
One of several species of sea birds of the genus Sula,
allied to the pelicans.
[1913 Webster]
Note: The common gannet of Europe and America ({Sula
bassana}), is also called solan goose, {chandel
goose}, and gentleman. In Florida the wood ibis is
commonly called gannet.
[1913 Webster]
Booby gannet. See Sula.
[1913 Webster]
From WordNet (r) 3.0 (2006) [wn]:
gannet
n 1: large heavily built seabird with a long stout bill noted
for its plunging dives for fish