breeding-ground

• breeding ground

breeding-ground (plural breeding-grounds)

1. A place or region where animals go to breed.
2. (figuratively) A place or institution seen as creating large numbers of a stated thing, type of person, etc.
   • 1989 April 30, Martha Bayles, quoting David Marc, “Taking Sitcoms Seriously”, in The New York Times‎, →ISSN:

     Echoing Allen Ginsberg, he contends that the suburban setting of “Father Knows Best” is most accurately seen as America's “ludicrous breeding ground for the young meat who will be fed into its wars and rat races and inhuman conformities.”

   • 2007 December 18, Lawrence Booth, The Guardian:

     What, wonder the denigrators, is county cricket for (if you ignore for a moment the small matter of providing a breeding-ground for the Test team)?

• ground

• fever swamp
• hotbed
• nidus