Cap
upper piece of the Separator (Uilleann pipes)
Upper piece of the Separator, protecting the reed; Comparatively long, it sits, during playing, in the crook of the arm and helps to support the pipes.
Made of metal, with a closing mount, traditionally of ivory, but nowadays [i.e. late 20th century; ws] of anything suggesting ivory (this applies to all mounts on the pipes).
Breathnach, Breandán: The Irish pipes. In: The bagpipes in Europe, 1 (1976), p.2.
Garvin, Wilbert: The Irish bagpipes: their construction and maintenance [Belfast 1978, Blackstaff Press]. Foreword by Breandán Breathnach. Kells, 1988 (2), p.20.