How is “gear to” used?

In Bone Tomahawk (2015), one line is: “Brooder, compact your gear to the essentials.”

Which movie is “gear to” from?

The clip at the top of this page is from Bone Tomahawk (2015).

Brooder, compact your gear to the essentials.

5 作品で登場 · 1 本目

句動詞

to make, change or prepare sth so that it is suitable for a particular purpose

5 本の映画に登場

gear sth to / towards sth
to make, change or prepare sth so that it is suitable for a particular purpose
The course had been geared towards the specific needs of its members.

定義：Oxford Advanced Learner's Dictionary 第 9 版