Sista ni neno la mkopo linalotumika katika lugha ya Kiswahili hasa kumaanisha mtawa wa kike, yaani mwanamke aliyewekwa wakfu alipoahidi kushika mashauri ya Kiinjili ya useja mtakatifu, ufukara na utiifu.
A member of a Christian religious community of women who live by certain vows and usually wear a habit, (Roman Catholicism, specifically) those living together in a cloister.