Straw construction is a type of building technique that involves the use of straw as a primary material. It is an ancient form of construction, dating back to the Neolithic period, and has been used in many parts of the world. The term 'straw construction' is often used to refer to a HUT, which is a small, simple dwelling made from straw and other materials. The word 'HUT' is derived from the three-letter word HUT, which is one of the solutions to the crossword.