1. relax after a period of work or tension
unwind after a stressful day
The verb 'unwind' means to undo the process of winding something. You can 'unwind a scarf' from around your neck or 'unwind' a coil or spring or unwind ivy from around a tree for example. 'To unwind' also means 'to relax' particularly after a period of tension or stress. Similar in meaning to 'loosen up', 'decompress' or 'destress'.