The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.
Appendix I
Indo-European Roots
ENTRY:
nes-2
DEFINITION:
Oblique cases of the personal pronoun of the first person plural. For the nominative see we-. 1. Zero-grade form *s-.us, from Old English s, us (accusative), from Germanic *uns.2. Suffixed (possessive) zero-grade form *s-ero-.our, ours, from Old English ser,re, our, from Germanic *unsara-.3. O-grade form *nos-, with suffixed (possessive) form *nos-t(e)ro-.Nostratic, nostrum; paternoster, from Latin ns, we, and noster, our. (Pokorny 3. ne- 758.)
s-. us, from Old English 
s, us (accusative), from Germanic *uns. 2. Suffixed (possessive) zero-grade form *
s, we, and noster, our. (Pokorny 3. ne- 758.) 
