Pixies are a small race native to the Emerald Dream that share the world with a contingent of fey including sprites and the like.S&L 147
A group of pixies helped fight during the War of the Ancients. They were diminute, sword wielding men with butterfly wings. They were also demigods.Sund 186
Imps' relation to Pixies?
Kurgatok calls his imp Keb'ezil a pixy, during an exchange involving the player, in  Magical Disturbances (Horde)ω τ ϖ. Due to the context, it is apparent that the term pixy was used satirically, as an insult.
Pixies are winged human-like creatures often associated with England and Scotland.