Population Demographics for St Joseph, Minnesota in 2016 and 2015.
Princeton's WordNet(0.00 / 0 votes)Rate this definition: 1  spawn(verb) the mass of eggs deposited by fish or amphibians or molluscs. 2  engender, breed, spawn(verb) call forth. 3  spawn(verb) lay spawn. The salmon swims upstream to spawn.
The release of fish eggs and their subsequent fertilization is called spawning. Most marine fish reproduce by releasing thousands of small eggs into the water for external fertilization. Egg-laying fish have a variety of methods for releasing the eggs. Some fish scatter eggs, which are fertilized by the male fish as they fall. Other fish attach the eggs to a surface, where they are then fertilized as they are released. Some fish release eggs into a nest of bubbles blown by the male fish.