The Collaborative International Dictionary of English v.0.48:

Twaite \Twaite\ (tw[=a]t), n. [Prov. E.] (Zool.)
   A European shad; -- called also twaite shad. See Shad.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Twaite \Twaite\, n. (O. Eng. Law)
   A piece of cleared ground. See Thwaite.
   [1913 Webster]