from The American Heritage® Dictionary of the English Language, 4th Edition
- pro. Used to indicate the one or ones belonging to us: The original of the painting is ours. Their children are grown, but ours are still young.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- pro. That which belongs to us; the possessive case of we, used without a following noun.
from the GNU version of the Collaborative International Dictionary of English
- See Note under our.
from The Century Dictionary and Cyclopedia
- See our.
Middle English oures, from oure, our, from Old English ūre.(American Heritage® Dictionary of the English Language, Fourth Edition)
our + -'s (Wiktionary)