testing ground

About 0.32 uses per million words.

Meaning

1. noun A military site that is used for testing weapons.
2. noun A location set up for the testing of vehicles, machinery, agricultural techniques, etc. to ensure that they work as intended.
3. noun A situation or thing that allows new ideas, methods, or hypotheses to be tried out.
4. noun A situation or problem that allows people to test how good they are.

Similar words

test site proving ground training ground range drill ground test bed gunsite emplacement test track nest