Word Study
willet
CIDE DICTIONARY
willet, n.
A large North American snipe (Symphemia semipalmata ); -- called also pill-willet , will-willet , semipalmated tattler , or snipe , duck snipe , and stone curlew . [1913 Webster]
OXFORD DICTIONARY
willet, n. (pl. same) a large N. American wader, Catoptrophorus semipalmatus.
Etymology
pill-will-willet, imit. of its cry
For further exploring for "willet" in Webster Dictionary Online