Toward or in the direction of the east; in an easterly direction.
From 'eastward' (east + Old English '-weard,' meaning direction) + '-s' (adverbial marker common in British English). This is the British English variant of the American 'eastward.'
British English preserves more '-wards' forms (towards, backwards, downwards) while American English often drops the 's,' but both are equally correct—it's a fascinating Atlantic divide in how we mark adverbs of direction.
Complete word intelligence in one call. Free tier — 50 lookups/day.