The term 'CHIMNEY VENT' is composed of two words, 'CHIMNEY' and 'VENT'. A CHIMNEY is a structure that allows smoke and other gases to escape from a building, while a VENT is an opening in a wall or roof that allows air to flow in and out. The crossword solution for the term 'CHIMNEY VENT' is 'FLUE', which is a duct or passage for smoke and other gases to escape from a building. A FLUE is typically located inside a CHIMNEY and is used to direct the flow of smoke and other gases away from the building.