Noun | 1. | ![]() seat - any support where you can sit (especially the part of a chair or bench etc. on which you sit); "he dusted off the seat before sitting down" Britain, Great Britain, U.K., UK, United Kingdom, United Kingdom of Great Britain and Northern Ireland - a monarchy in northwestern Europe occupying most of the British Isles; divided into England and Scotland and Wales and Northern Ireland; `Great Britain' is often used loosely to refer to the United Kingdom |