1. to remove thread from something, especially a needle or sewing machine
2. to undo or unravel something that has been threaded

Examples

• She unthreads the needle before putting it away.
• The seamstress unthreads her sewing machine at the end of each day.
• He carefully unthreads the beads from the broken necklace.
• The technician unthreads the cable from the equipment.
• She unthreads the shoelaces to replace them with new ones.
• The worker unthreads the wire from the electrical panel.