an abstract place usually conceived as having depth | in some social insects (such as ants) a physically distinct individual or group of individuals specialized to perform certain functions in the colony |
a subpopulation divided into a stratified sampling | a social class separated from others by distinctions of hereditary rank or profession or wealth |
people having the same social, economic, or educational status | (Hinduism) a hereditary social class among Hindus; stratified according to ritual purity |
one of several parallel layers of material arranged one on top of another (such as a layer of tissue or cells in an organism or a layer of sedimentary rock) | social status or position conferred by a system based on class |