1. the action of removing pins or fastenings
2. the process of undermining or weakening the foundation or basis of something
Usage: figurative

Examples

• The unpinning of the fabric samples took several minutes.
• She began the careful unpinning of the butterfly specimens.
• The unpinning of the old economic policies led to major reforms.
• The scandal resulted in the unpinning of his political career.
• The unpinning of traditional values concerned many community members.
• After the unpinning of the display, the items were stored safely.