seat

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Something, such as a chair or bench, that may be sat on.
• noun The part on which one rests in sitting.
• noun A place in which one may sit.
• noun The right to occupy such a place or a ticket indicating this right.
• noun The buttocks.
• noun The part of a garment that covers the buttocks.
• noun A part serving as the base of something else.
• noun The surface or part on which another part sits or rests.
• noun The place where something is located or based.
• noun A center of authority; a capital.
• noun A place of abode or residence, especially a large house that is part of an estate.
• noun Membership in an organization, such as a legislative body or stock exchange, that is obtained by appointment, election, or purchase.
• noun The manner of sitting on a horse.
• intransitive verb To place in or on a seat.
• intransitive verb To cause or assist to sit down.
• intransitive verb To provide with a particular seat.
• intransitive verb To have or provide seats for.
• intransitive verb To install in a position of authority or eminence.
• intransitive verb To fix firmly in place.
• intransitive verb To rest on or fit into another part.
• idiom (by the seat of (one's) pants) In a manner based on intuition and experience rather than method.
• idiom (by the seat of (one's) pants) Without the use of instruments.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A place in which to sit.
• noun The horizontal portion of a chair or other furniture designed for sitting.
• noun A piece of furniture made for sitting; e.g. a chair, stool or bench; any improvised place for sitting.
• noun The part of an object or individual (usually the buttocks) directly involved in sitting.
• noun The part of a piece of clothing (usually pants or trousers) covering the buttocks.
• noun A membership in an organization, particularly a representative body.
• noun The location of a governing body.
• noun certain Commonwealth countries an electoral district, especially for a national legislature.
• noun The starting point of a fire.
• verb transitive To put an object into a place where it will rest.
• verb transitive To provide places to sit.
• verb obsolete, intransitive To rest; to lie down.