run (something) up the flagpole

run (something) up the flagpole

To test out an idea in order to gauge interest or gain feedback. Run your idea up the flagpole before you pitch it to the boss, so that you don't make a fool of yourself.
See also: flagpole, run, up
Farlex Dictionary of Idioms.

run something up the flagpole

If you run an idea up the flagpole, you suggest it to people in order to find out what they think of it. That's a great idea. Let's run it up the flagpole and see what happens. Note: If you run a flag up a flagpole, you pull it to the top using the rope attached to the side of the flagpole.
See also: flagpole, run, something, up
Collins COBUILD Idioms Dictionary, 3rd ed.

run something up the flagpole

test the popularity of a new idea or proposal.
The idea behind this expression is of hoisting a particular flag to see if it provokes the positive response of a salute.
See also: flagpole, run, something, up
Farlex Partner Idioms Dictionary

run (something) up the flagpole

Slang
To test (a plan, suggestion, draft, or idea) and then measure the response to it.
See also: flagpole, run, up
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • flagpole
  • run something up the flagpole
  • run up the flagpole
  • bounce an idea off (of) (one)
  • bounce an idea off someone
  • that's an idea
  • that's an idea!
  • put (something) in (one's) head
  • put in head
  • put something into someone's head