Twi'lek 

Humanoid aliens with two lekku ("brain tails") emerging from the back of their head. Consequently they have no hair, and some say no hair anywhere - as Ryloth is something of a hot world. They come in a variety of colours including pasty white and several shades of green, blue and red (dying out). Twi'leks have a strong but little-known warrior culture.

Aalya Secura is a Twi'lek Jedi, the only Star Wars character to appear in the Expanded Universe before the movies.

Twi'lek by Zachary Gibbons September 22, 2004

Twi'leki 

The language of Twi'leks, a race from the Star Wars universe recognizable by their head-tails. Twi'leki "combines both verbal components with subtle head-tail movements. When (Twi'leks) wish, they can even communicate in complete secrecy using their versatile head-tails."-wiki

"Kapuna" and "Achuta" are two common Twi'leki words spoken by Twi'leks in the videogame KotOR.

Twi'leki by kcar January 19, 2009