Detaches, as a brooch

• Removes, as a temporary hem
• Detaches, in a way
• Stops going steady?
• Removes from the Windows taskbar
• Removes a diaper old style
• Loosens, in a way
• Lets down, as long hair
• Frees, in a way

Wiktionary Word definitions in Wiktionary
vb. (en-third-person singular of: unpin )