The word "spawning" means the act of laying eggs or giving birth to offspring, particularly in the context of aquatic animals like fish or amphibians. Full definition
While the Deathmatch modes are mostly FPS driven, there is some small elements of RTS included such as spawning of a Droid to assist you). (terrathegame.com)
Whereas you knew to attack hives to stop enemies from spawning in Quest mode, Survival mode keeps the enemies coming, so you best be ready. (darkstation.com)
She took clutches of spawn from the Corcovado National Park, Costa Rica, and suspended them over water in cages containing snakes separated from the eggs by partitions. (newscientist.com)