All 4 Uses of

preserve
in
To Kill a Mockingbird

Our tacit treaty with Miss Maudie was that we could play on her lawn, eat her scuppernongs if we didn't jump on the arbor, and explore her vast back lot, terms so generous we seldom spoke to her, so careful were we to preserve the delicate balance of our relationship, but Jem and Dill drove me closer to her with their behavior.
p. 47.2 *

preserve = protect; or keep from changing

Had not Sinkfield made a bold stroke to preserve his holdings, Maycomb would have sat in the middle of Winston Swamp, a place totally devoid of interest.
p. 148.4

preserve = protect

I walked home with Dill and returned in time to overhear Atticus saying to Aunty, "…in favor of Southern womanhood as much as anybody, but not for preserving polite fiction at the expense of human life," a pronouncement that made me suspect they had been fussing again.
p. 167.6

preserving = protecting

From the other side, however, Greek revival columns clashed with a big nineteenth-century clock tower housing a rusty unreliable instrument, a view indicating a people determined to preserve every physical scrap of the past.
p. 185.2

preserve = protect

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