from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Plural of os3.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An esker.
from the GNU version of the Collaborative International Dictionary of English
- n.pl. See 3d os.
from The Century Dictionary and Cyclopedia
- Same as asar, pl. of as, os.
- Same as os. A ridge of glacial debris of considerable longitudinal extent, showing rough water-stratification: same as eskar. Also called serpent-kame.