Trappist

From French trappiste, from La Trappe Abbey, the monastery where the order was originated.

English Wikipedia has an article on:

Trappist

Wikipedia

Trappist (plural Trappists)

1. A monk or nun of the Order of Cistercians of the Strict Observance (a branch of the Cistercians Roman Catholic religious brotherhood that use a particularly strict interpretation of the Rule of St Benedict).

• Cistercian

Trappist (not comparable)

1. Of or relating to this monastic order.

• Trappist cheese