noun
EXAMPLES FROM OTHER ENTRIES
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Chicago was becoming an influential proving ground for bands like Smashing Pumpkins.
EXAMPLES FROM CORPUS
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All others are graduates of the Gold Coast Pro-Am Circuit, a summertime proving ground for aspiring tour players.
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It was a great proving ground .
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Special projects are also an excellent proving ground .
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The position required no athletic ability, but traditionally has served as a proving ground for Mississippi politicians.
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Warrior robots, juggernauts, and land raiders used the jungles as a proving ground .