Hypertext Webster Gateway: "gadwall"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Gadwall \Gad"wall\, n. [Gad to walk about + well.] (Zo["o]l.)
A large duck ({Anas strepera}), valued as a game bird, found
in the northern parts of Europe and America; -- called also
{gray duck}. [Written also {gaddwell}.]
Additional Hypertext Webster Gateway Lookup
Gateway by dict@stokkie.net
stock only wrote the gateway and does not have any control over the contents;
see the Webster Gateway FAQ,
and also the Back-end/database links and credits.