SEAT

A space reserved for sitting (as in a theater or on a train or airplane)

Example: "He booked their seats in advance"

The fleshy part of the human body that you sit on

Example: "He deserves a good kick in the butt"

Furniture that is designed for sitting on

Example: "There were not enough seats for all the guests"

Any support where you can sit (especially the part of a chair or bench etc. on which you sit)

Example: "He dusted off the seat before sitting down"

A center of authority (as a city from which authority is exercised)

The location (metaphorically speaking) where something is based

Example: "The brain is said to be the seat of reason"

The legal right to sit as a member in a legislative or similar body

Example: "He was elected to a seat in the senate"

A part of a machine that supports or guides another part

The cloth covering for the buttocks

Example: "The seat of his pants was worn through"