The term 'temporary obstruction' can be summarized as a BARRICADE, which is a nine-letter word. A BARRICADE is an obstruction that is set up to block or impede the passage of people or vehicles. It is usually constructed from materials such as wood, metal, or concrete and is often used to control crowds or to protect a certain area. Barricades are typically temporary in nature and are removed once their purpose has been served.