That has been in existence for a long time.

plural of eating establishment

(botany) A special form of seedling growth in arboraceous monocotyledons, during which the longitudinal axis of the stem expands to reach its final girth. After achieving the definitive basal diameter, the stem elongates, maintaining a nearly cylindrical form.

A clause in the First Amendment to the United States Constitution, stating "Congress shall make no law respecting an establishment of religion".

(hydrography) A datum on which the tides are computed at the given port, obtained by observation. It is the interval between the Moon's passage over the meridian and the time of high water at the port, on the days of new moon and full moon.

Alternative letter-case form of Establishment Clause

plural of established suit

(bridge, whist) A plain suit in which a player (or side) could, except for trumping, take tricks with all of his or her remaining cards.

Alternative form of reestablish

Having been established for a long period of time. / Well-known.