The term 'straightening' can be defined as the process of aligning something in a straight line. This term can also be referred to as 'ALIGNMENT, ' which is a nine-letter word that is commonly used in crossword puzzles. Straightening is often used in construction, engineering, and other fields where precision is important. It is also used in everyday life, such as when hanging pictures or arranging furniture. Straightening is an important part of many tasks and can help ensure accuracy and efficiency.