hold a gun to head

hold a gun to (one's) head

To force or pressure someone to do something. Kristina, you don't have to move if you don't want to—no one's holding a gun to your head.
See also: gun, head, hold
Farlex Dictionary of Idioms.

hold a gun to someone's head

Exert pressure on someone, as in How could I refuse when she was holding a gun to my head? This hyperbolic expression dates from the first half of the 1900s. Also see at gunpoint; hold one's feet to the fire.
See also: gun, head, hold
The American Heritage® Dictionary of Idioms by Christine Ammer.

hold a gun to someone's head

or

put a gun to someone's head

If someone holds a gun to your head or puts a gun to your head, they force you to do something by threatening very bad consequences if you do not do it. The union should follow the established procedures and should not try to hold a gun to the heads of the industry and passengers. Not a man to have a gun put to his head, Mr Riordan was soon tearing up the offer and cancelling future meetings with the union. Note: Other words with a similar meaning to gun are sometimes used. The banks' insistence on action has put a pistol to their heads.
See also: gun, head, hold
Collins COBUILD Idioms Dictionary, 3rd ed.

hold (or put) a gun (or a pistol) to someone's head

force someone to do something by using threats.
See also: gun, head, hold
Farlex Partner Idioms Dictionary

hold a gun to (someone's) head

To put pressure on someone.
See also: gun, head, hold
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • Don’t make a federal case out of it!
  • come it
  • come it (with one)
  • all in (one's) head
  • don't bet on it
  • don't get me wrong
  • don't beat a dead horse
  • discipline
  • discipline (one) for (something)
  • discipline for