a. Now rare or Obs. [f. WESTER a. + -MOST.] Lying or situated farthest west; = WESTERNMOST.
1555. Eden, Decades (Arb.), 381. The Westermost poynte of the Trepoyntes.
1598. Hakluyt, Voy., I. 337. The riuer Ob is the most Westermost part thereof.
1625. N. Carpenter, Geog. Del., I. iii. (1635), 65. The Meridian about the Westermost of the Azores.
1697. Dampier, Voy., I. 421. Three of the Islands were pretty large; the Westermost is the biggest.
1727. A. Hamilton, New Acc. E. Ind., II. 24. Sagor the westermost Chanel of the Ganges.
1775. Romans, Florida, App. 37. At the east end of the westermost key is another channel 8 feet deep.
1821. Southey, Vis. Judgement, i. 10. From far Glaramara, Bleacrag, and Maidenmawr, to Grizedal and westermost Withop.