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.
Size and appearance. The female can reach a size of 8 cm / 3 in while the male can be up to 10 cm / 4 in length. Even though the male is longer, the female can appear to be larger since her belly is bigger. During the spawning season her belly will take on a brilliant cherry red hue.