All 5 Uses of

preserve
in
The Return of the King

Though the Stewards deemed that it was a secret kept only by themselves, long ago I guessed that here in the White Tower, one at least of the Seven Seeing Stones was preserved.†
Chpt 5.7

preserved = protected or kept something as it was

Even the orc-rags that you bore in the black land; Frodo, shall be preserved.†
Chpt 6.4

In his time the City was made more fair than it had ever been, even in the days of its first glory; and it was filled with trees and with fountains, and its gates were wrought of mithril and steel, and its streets were paved with white marble; and the Folk of the Mountain laboured in it, and the Folk of the Wood rejoiced to come there; and all was healed and made good, and the houses were filled with men and women and the laughter of children, and no window was blind nor any courtyard empty; and after the ending of the Third Age of the world into the new age it preserved the memory and the glory of the years that were gone.†
Chpt 6.5

The Third Age of the world is ended, and the new age is begun; and it is your task to order its beginning and to preserve what may be preserved.†
Chpt 6.5 *

The Third Age of the world is ended, and the new age is begun; and it is your task to order its beginning and to preserve what may be preserved.†
Chpt 6.5

Definitions:

(1) (preserve as in: preserve the records)
to protect something or to keep it as it is
(2) (preserve as in: preserve the peaches)
to prepare food in a way that keeps it from spoiling
(3) (preserve as in: a wildlife preserve)
protected wildlife area
(4) (preserve as in: no longer a male preserve)
something exclusive to (someone or some group) -- such as an activity or place
(5) (preserves as in: mom made preserves)
chunks of fruit cooked with sugar (like jam) and sealed (usually in a mason jar) so it will not spoil