Barellian was the term used to describe any native inhabitant of the planet Lan Barell, regardless of whether they were Qieg or Human. The Qieg's language utilized body language to communicate, along with verbal chirps and clicks. As a result, Barellian Humans did not express emotions through normal means, such as on their faces, but with their hands. This made Barellian Humans hard to read, but did make them excellent Sabacc players.
Sources
"Lan Barell" — Star Wars Adventure Journal 1 (First mentioned)- Alien Encounters