hunker down to

hunker down to (something)

To work or begin to work on something in a determined matter. I can't believe I didn't get an A on my project after I'd hunkered down to it all weekend!
See also: down, hunker
Farlex Dictionary of Idioms.

hunker down to something

Fig. to apply oneself to something, to get started working at something. I hunkered down to my chores, hoping to get them done before noon. If you want to get a good grade on that report, you'd better hunker down to it.
See also: down, hunker
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • hunker down to (something)
  • go shares
  • be at work
  • it will never fly
  • It'll never fly
  • I've got work to do
  • mistress
  • be your own master/mistress
  • be (one's) own master
  • at work