DCHP-1 Online
sea-ice 
1 n. masses of ice in the sea; ice formed from frozen salt water.
- 1924 Bitterly cold in winter, Labrador has a short and lovely time when the snow and sea-ice melt. . . .
- 1946 . . . one of those cracks which generally divides [sic] the inshore ice, anchored to the rocks below, from the main body of floating sea ice.
2 n. Nfld
See also: ice ((n.)) (def. 1)
- 1952 "When I was your age I'd been to Spain and Italy . . . in schooners and square-riggers . . . and before that I'd been out to the sea-ice five seasons with the swilers."
- 1924 Bitterly cold in winter, Labrador has a short and lovely time when the snow and sea-ice melt. . . .