A female fish, often specifically a salmon, which is physiologically ready to spawn(noun)
A program which spawns objects or processes as needed(noun)
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Use "spawner" in a sentence
"One is a spring spawner, the other is a fall spawner."
"So I would also much rather see someone "poach" a few small trout from private waters, that see someone legally kill a top spawner for bragging rights."
"This ironic bit of synergy was brought to my attention by Aaron Woolf, the acutely observant producer/director of King Corn whose latest documentary, Beyond The Motor City, boldly repurposes Detroit, home of the auto industry and spawner of sprawl, as the potential birthplace for a mass transit revival."