Zoology. the mass of eggs deposited by fishes, amphibians, mollusks, crustaceans, etc.
Mycology. the mycelium of mushrooms, especially of the species grown for the market.
a swarming brood; numerous progeny.
(used with a singular or plural verb) any person or thing regarded as the offspring of some stock, idea, etc.
1350–1400; Middle English spawnen
(v.), probably < Anglo-French espaundre
(Old French espandre
) to expand
spawner, noununspawned, adjective
engender, generate, yield, beget.