Correct. This word actually comes from singular נש (nash) meaning person. However, נש (which I think comes from Aramaic), is rarely used on its own, but can be seen in other words such as (ברנש) - meaning person, (or sometimes a brat) literally "son of a human". It's probably connected to Enos, the son of Seth. Compare to Arabic "امرأة" ('imra'a), meaning woman, and نساء (nisa'), meaning women.