A separate and fixed order or class of persons in society who chiefly associate with each other.
Hyponyms: Brahmin, Kshatriya, Shudra, Vaishya, varna
Any of the hereditary social classes and subclasses of South Asian societies.
A class of polymorphous eusocial insects of a particular size and function within a colony.
A class of society composed of people with similar social, cultural, or economic status.
One of several parallel horizontal layers of material arranged one on top of another.
A layer of sedimentary rock having approximately the same composition throughout.
Any of the regions of the atmosphere, such as the stratosphere, that occur as layers.
A layer of vegetation, usually of similar height.
The level of accuracy of a computer's clock, relative to others on the network.
A layer of tissue.