The basic unit of living organisms, enclosed by a membrane.

• The smallest structural and functional unit of life.

A small room in a prison for confining one or more inmates.

A small room in a monastery or convent for one person.

An electrochemical unit that produces electric current; part of a battery.

One of the hexagonal compartments in a honeycomb.

A small, independent group within a larger organization, often secret.

The rectangle where a row and a column intersect in a spreadsheet.

Informal. A mobile phone; short for cell phone.