
Latin, meaning: partner, comrade, associate, ally, fellow.
Found on
http://archives.nd.edu/sss.htm

Latin, meaning: sharing, associated, allied.
Found on
http://archives.nd.edu/sss.htm

member; associate; companion
Found on
http://phrontistery.info/s.html

Ally.
Found on
http://www.encyclo.co.uk/local/20764

A companion, or ally. The Social War was a war between allies (socii). Other forms of allies would include: - socii navales - a term for naval allies. - socii Nominis Latini - literally, allies of the Latin name, this was a term used for Latin league allies.
Found on
http://www.encyclo.co.uk/visitor-contributions.php

partner, comrade, associate, ally, fellow.
Found on
https://www.math.ubc.ca/~cass/frivs/latin/latin-dict-full.html

sharing, associated, allied.
Found on
https://www.math.ubc.ca/~cass/frivs/latin/latin-dict-full.html
No exact match found.