hummock

noun

Etymology: Unknown, but probably a diminutive of hump, equivalent to hump + -ock (diminutive suffix). Compare hillock.

1. A small hill; a hillock; a knoll.

   “The west edge of their landing area was swarming with…things. Like wolves or dogs, but with long necks, they moved quickly forward, darting from hummock to hummock”

2. A ridge or hill of ice in an ice field.
3. A fistful.