Is it ensure, insure, or assure?
mid-14c., from Old French cabane "hut, cabin," from Old Provençal cabana, from Late Latin capanna "hut" (source of Spanish cabana, Italian capanna), of doubtful origin. French cabine (18c.), Italian cabino are English loan-words. Meaning "room or partition of a vessel" is from late 14c. Cabin fever first recorded by 1918 in the "need to get out and about" sense; earlier (1820s) it was a term for typhus.
only in Jer. 37:16 (R.V., "cells"), arched vaults or recesses off a passage or room; cells for the closer confinement of prisoners.