DCHP-1 Online
hummocky 
adj. of ice, marked by hummocks (def. 2).
See also: hummock (def. 2)
- 1850 The refraction had caused a hummocky piece of ice to assume these forms.
- 1906 Wind and tide had jammed together masses of floating ice, now frozen solid, but with a surface rough and uneven--"hummocky," as Newfoundlanders call it--and liable to have treacherous spots to catch the unwary.
- 1939 [Soon] they were out of sight round the first of the hummocky ice. . . .
- 1850 The refraction had caused a hummocky piece of ice to assume these forms.