kamet
- n a mountain in the Himalayas in northern India (25,450 feet high)
katsina
- n a city in northern Nigeria; a major center of the Hausa people
jobcentre
- n a government office in a town where information about available jobs is displayed and where unemployment benefits are administered
jocasta
- n (Greek mythology) queen of Thebes who unknowingly married her own son Oedipus
jock
- n a person trained to compete in sports
- n a support for the genitals worn by men engaging in strenuous exercise