Definition from Wiktionary, the free dictionary
staithe (plural staithes)
- (UK, obsolete) A riverbank
- (UK, archaic or dialectal) A fixed structure where ships land, especially to load and unload; wharf; landing stage.
Usage notes 
The landing stage sense is common in place names, particularly in the former Danelaw area of east and north-east England where it remains dialectal in use.