There was in Benedictine (Trappist,etc.) monasteries,
a huge many-pleated overgarment worn over the habit
in choir. The churches were stone, unheated, and very
uncomfortable. This was worn in the many hours spent
singing the Breviary (Liturgy of Hours). Does anyone
know what it was called. The closest I can remember is
cucula, cuculum. But cannot find it.

----please, draw me a sheep----