fixture
n. countablen. something or someone that is a permanent part of a place or group. You use this for objects fixed to a building or people who are always there.
n. an object permanently attached to a building or land, or a person or thing long established in the same place or position.
The old wooden bookshelves are a permanent fixture in this library.
After twenty years of service, the head librarian had become a fixture of the local community.
When selling the property, the owners had to clarify which light fittings were considered fixtures and which were personal property to be removed before the closing date.
Alteration of older fixure, on the model of mixture.
Often used metaphorically to describe people who have been in a role or location for a very long time.