GILLIE (from the Gael. gille, Irish gille or giolla, a servant or boy)  , an attendant on a Gaelic chieftain; in this sense its use, save historically, is rare . The name is now applied in the Highlands of Scotland to the man-servant who attends a sports-man in shooting or fishing . A gillie-wetfoot, a term now obsolete (a translation of gillie-casfliuch, from the Gaelic cas, foot, and fliuch, wet), was the Billie whose duty it was to carry his master over streams . It became a term of contempt among the Lowlanders for the " tail " (as his. attendants were called) of a Highland chief .