Straightening refers to the process of making something straight or aligning it in a desired direction. This can apply to various contexts, such as hair straightening, where heat or chemical treatments are used to remove curls or waves, resulting in smooth, sleek hair. In a broader sense, straightening can also involve organizing or tidying up spaces, like straightening books on a shelf or arranging furniture in a room. This helps create a more orderly and visually appealing environment, making it easier to navigate and use the space effectively.