A class of polymorphous eusocial insects of a particular size and function within a colony.
Hyponyms: Brahmin, Kshatriya, Shudra, Vaishya, varna
A separate and fixed order or class of persons in society who chiefly associate with each other.
Any of the hereditary social classes and subclasses of South Asian societies.
A host-specific lineage of a brood parasite species.^([W])
A legally defined unit of Roman society, being a collection of people related through a common ancestor by birth, marriage or adoption, possibly over many generations, and sharing the same nomen gentilicium.
A tribal subgroup whose members are characterized by having the same descent, usually along the male line.