1 n. See quote.
2a n. Hist. the annual thrusting forward and expansion of river ice during break-up, with special reference to the St. Lawrence River, where the phenomenon was accompanied with much flooding and considerable danger.
See also: ice-shove (def. 2) shoving of the ice
2b n. a thrusting forward of river ice under pressure, an action causing ridges on the ice surface and the building up of masses of ice on the shores.
See also: bourdigneau ice-shove (def. 2)