1864 J. Hunt tr. C. Vogt xi. 324 The facts are thus summarised by Kjerulf... ‘At the time of the greatest extension of the ice sea, the Scandinavian-Finnish continent was an island, whilst a broad ice arm connected the present Polar sea, and the White sea with the Baltic.’
1928 4 Sept. 11/5 He..had mistaken the Frederikshaab ice arm for the Sukkertoppen ice arm.
a1976 ‘J. Tiptree’ (2000) 209 The ice-arm behind the hand was seven miles long; the shoulder was an enormous icefall.