The term SEAT SEPARATOR is composed of two words, ARMREST and AISLE. An armrest is a support for the arm, usually found on the sides of chairs or sofas. It is typically made of wood, metal, or plastic, and can be used to separate two people sitting side by side. An AISLE is a passage between rows of seats in a theater, stadium, or other public space. It is typically wide enough for people to walk through, and is often used to separate different sections of seating. Together, these two words form the term SEAT SEPARATOR, which refers to the physical barrier between two seats in a public space.