from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The formation of hummocks in the collision of Arctic ice.
from the GNU version of the Collaborative International Dictionary of English
- n. The process of forming hummocks in the collision of Arctic ice.
from The Century Dictionary and Cyclopedia
- n. The production of mounds and ridges of broken ice when two floes crowd upon each other.
hummock + -ing (Wiktionary)