The term LIFE JACKET is composed of two crossword solutions: VEST (4 letters) and MAEWEST (7 letters). A life jacket is a personal flotation device designed to keep a person afloat in water. It is typically made of buoyant material and is worn around the torso. The purpose of a life jacket is to provide additional buoyancy in the water, allowing the wearer to stay afloat even if they are unconscious or unable to swim. MAEWEST is an acronym for the Marine Aviation and Exploration Wearable Survival Technology, which is a type of life jacket developed by the US Navy.