It is a southern US dialect phrase from the 1960's possibly adopted from the old Scottish word 'to squat' which in turn came from Scandinavia 'huka or hoka or hokra' meaning to crawl
The phrase 'hunker down' originated from Scots dialect in the early 18th century. It originally meant to squat or crouch down, and over time evolved to mean to settle in or take shelter.
The phrase of Greek origin referring to the common people is "hoi polloi."
During the storm, the family decided to hunker down in their basement until it passed.
The origin of the phrase "seedy" is believed to come from the appearance of a plant that has gone to seed, which often looks dry, withered, and generally unwell. Over time, the term was extended to describe people or things that seem disreputable, run-down, or in poor condition.
The prepositional phrase for "from head" is "from head," indicating the starting point or origin of something.
The phrase "when she got down" is an adverbial clause. Specifically, it functions as an adverbial clause of time, providing information about when the action in the main clause (she got down) occurred.
"to squat, crouch," 1720, Scottish, of uncertain origin, possibly from a Scandinavian source, cf. Old Norse huka "to crouch," hoka, hokra "to crawl." Hunker down, Southern U.S. dialectal phrase, popularized c.1965, from northern British hunker "haunch." Related: Hunkered; hunkering. from the Online Etymology Dictionary
When the artillery arrives, we will hunker down in the bunker.
Quizby Quiz sang the song "Hunker down hairy dawg!"
IRISH
Clisby Clark
ponerse el cinturon
Plenty more down cellar in a teacup
He hunkered down in the cabin during the blizzard.
They generally snooze standing up, but will sometimes hunker down and sleep.
This phrase originates with the 'Old Bailey' in London, where the remand cells were literally under the court itself.
They hunker down, button up. and wait for the storm to end.
There is no such phrase as "eat you".