Entry 1 sense Webster, 1913 Cairo · IPA /kɛɹ.oʊ/ 01 prop. n. The capital city of Egypt. It is the largest city in Africa. Population (2000) = 7,010,000. 1. The capital city of Egypt. It is the largest city in Africa. Population (2000) = 7,010,000.(Geography) Syn. El Qahira, Egyptian capital, capital of Egypt.