draw a line in the sand

draw a line in the sand

To establish a figurative boundary that someone or some group refuses to cross or beyond which no further advance or compromise is accepted. I don't mind my roommate being a bit messy, but leaving dirty dishes for me to clean up is where I draw a line in the sand!
See also: draw, line, sand
Farlex Dictionary of Idioms.

draw a line in the sand

Fig. to create or declare an artificial boundary and imply that crossing it will cause trouble. Todd drew a line in the sand by giving his roommate an ultimatum about his sloppiness—he had to start cleaning up after himself or move out.
See also: draw, line, sand
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

draw a line in the ˈsand

set a limit that you refuse to allow something to go beyond: The government is trying to draw a line in the sand regarding public sector pay rises.
See also: draw, line, sand
Farlex Partner Idioms Dictionary
See also:
  • draw the line
  • line in the sand
  • a line in the sand
  • encroach
  • encroach (up)on (something)
  • encroach on
  • let off on
  • let off on (someone or something)
  • smile (up)on (someone or something)
  • smile on