a. Forms: 1 westmæst, 1, 6 Sc., westmest (1 weste-), 6 Sc. -mast, 67 Sc. -maist; 3, 6 westmost (9 Sc. wastmost). [f. WEST adv. + -MOST.] Most westerly; westernmost.
825. in Birch, Cartul. Sax., I. 542. Ærest of þam west mæstan æwylle upp to þam ealdan herepaðe.
c. 893. K. Ælfred, Oros., VI. i. Romana [onweald] is mæst & westmest. Ibid. On þæm westemestan [onwealde], þæt is Roma.
c. 972. in Kemble, Cod. Dipl., III. 262. Þæs landes ʓemæra þe ʓebyriað into þære westmestan hide.
1297. R. Glouc. (Rolls), 4495. Fram þe weste syde of þe world to þe est moste ende, þo adde king arþure ywonne fram þe west moste se.
1456. Exch. Rolls Scot., VI. 224. Onerat se de ix li. de Mydmeststede de Warmwod. Et de ix li. de Westmeststede ejusdem. Et de ix li. de Estmeststede de Langhop.
1510. in Laing Charters (1899), 70. The haile foirland of the said tenement with the westmost ȝharde.
1595. Reg. Mag. Sig. Scot., 90/2. To the westmest dyk of the eistmest cornefauld.
1632. Lithgow, Trav., I. 23. Gayetta, the West-most confine of the Neapolitan Kingdome.
1800. W. Taylor, in Monthly Mag., VIII. 684. They are the westmost portion of the horde.
1805. State, Leslie of Powis, etc. 56 (Jam.). That the westmost sight was above the Fluicky-shot.
1871. Daily News, 27 Jan., 6/2. A vague and dim attempt on the part of the French heavily-armed batteries at St. Ouen to enfilade our westmost one at Ormeson.