Definition of easts:
(n) :
The direction of the earth's rotation, specifically 90°.
(adj) :
Situated or lying in or towards the east; eastward.
(adj) :
Of or pertaining to the east; eastern.
(n) :
The eastern region or area; the inhabitants thereof.
(adj) :
(meteorology) Blowing (as wind) from the east.
(adv) :
Towards the east; eastwards.