1) An opening or entranceway in a wall. [< OldEngl. get = an opening]
2) When used in placenames or street names, 'gate' does not always mean gate as an opening or entrance; rather it means a street or way. This is esp. so in the north of England. [< OldEngl. gata = road] -
Cf. Port
Dictionary of Medieval Terms and Phrases. Christopher Coredon with Ann Williams.