The term 'Suburb of Cairo' can be summarized by the crossword solution Giza, which is a 4-letter word. Giza is a city located on the west bank of the Nile River in Egypt, and is part of the Greater Cairo metropolitan area. It is one of the oldest cities in the world, and is home to some of the most iconic monuments in the world, such as the Great Pyramid of Giza and the Sphinx. Giza is also known for its vibrant culture and bustling markets.