hunker down

Verb

hunker down (third-person singular simple present hunkers down, present participle hunkering down, simple past and past participle hunkered down)

1. (idiomatic) To take shelter; to prepare oneself for some eventuality; to focus on a task.
   • That test is worth half your grade, so you'd better hunker down and start studying.
   • Imagine that you are in a storm; you would not shake your fists at the clouds and the rain and yell, “Stop it, stop it NOW! This is unacceptable.” You would hunker down for safety and wait until it passes.2016 June 29, Meghan Leahy, “A tween’s mood swings and tantrums are driving Mom crazy”, in The Washington Post, archived from the original on 11 Sep 2018
2. (idiomatic) To stubbornly hold to a position.