any immature animal

the immature free-living form of most invertebrates and amphibians and fish which at hatching from the egg is fundamentally unlike its parent and must metamorphose

characteristic of a lack of maturity

One who works at a particular occupation or activity, A member of a colony of social insects such as ants, bees, wasps, or termites, usually a sterile or sexually immature female but in termites an individual of either sex, that performs specialized work such as building the nest, collecting and storing food, and feeding other members of the colony, One who, or that which, works; a laborer; a performer