1. A group of over400 closely related languages spoken in central, east-central, and southern Africa, belonging to the South Central subgroup of the Niger-Congo language family and including Swahili, Kinyarwanda, Kirundi, Zulu, and Xhosa.
2. Any of a subgroup of picornaviruses, including polioviruses, coxsackieviruses, and echoviruses, that infect the gastrointestinal tract and often spread to other areas of the body, especially the nervous system.