what does testing ground mean?

TESTING GROUND as NOUN

Meaning
- a region resembling a laboratory inasmuch as it offers opportunities for observation and practice and experimentation
Synonym(s)
- laboratory (what does laboratory mean?)
Usage Example(s)
- the new nation is a testing ground for socioeconomic theories
- Pakistan is a laboratory for studying the use of American troops to co
Hypernyms(s) testing ground is a kind of… Example: animal is a hypernym of mammal, plant is a hypernym of flower
- region (what does region mean?)