a. Obs. [f. EASTER a. + -MOST, in place of the earlier EASTMOST; cf. bettermost, uppermost, etc. Now superseded by EASTERNMOST.] Most easterly; situated farthest to the east.
1555. Eden, Decades W. Ind. (Arb.), 381. The eastermost tree is the hyghest.
1614. Raleigh, Hist. World, II. 287. The Easter-most Hils of Tyre.
1704. Collect. Voy. & Trav., III. 51/2. The bigger Island is the Eastermost.
1832. J. C. Hare, in Philological Museum, I. 175. The eastermost Pelasgian country on the Propontis.