deverticulum

Etymology
From.

Noun

 * 1) A byroad, bypath, side-way; tributary.
 * 2)  A deviation, digression.
 * 3) A place for travellers to put up; an inn, lodging.
 * 4)  A refuge, retreat, lurking-place.
 * 1)  A refuge, retreat, lurking-place.