In the direction of a city; toward the city (British variant of cityward).
Variant of cityward, with the optional -s common in British English for directional adverbs. Similar to towards/toward and other directional word variants.
The British preference for 'towards' and 'citywards' over the American 'toward' and 'cityward' is a tiny fossil of how English split into variants—one didn't replace the other, both just coexist showing language change in real time.
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