The Collaborative International Dictionary of English v.0.48:

Staith \Staith\ (st[=a]th), n. [AS. stae[eth] a bank, shore,
   from the root of E. stead.]
   A landing place; an elevated staging upon a wharf for
   discharging coal, etc., as from railway cars, into vessels.
   [Eng.]
   [1913 Webster]