testing ground
noun
Definition of testing ground
1 : a place where machines, vehicles, etc., are tested to see if they are working correctly a testing ground for weapons
2 : a place or situation in which new ideas, methods, etc., can be tried Her class served as a testing ground for new teaching methods.
From the M-W Editors
Word by Word Definitions
groundplay
: the bottom of a body of water
: sediment
: ground coffee beans after brewing
: to bring to or place on the ground
: to cause to run aground
: to provide a reason or justification for
: past tense and past participle ofgrind
See the full definition of ground
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