put a pin in

Meaning

Verb

• To discredit or ridicule; to deflate someone or something that is pompous or overly esteemed.
• To make something certain; to nail down.
• To postpone; to stop focusing or working on (something) until it can be finished at a later time.

Origin

• Metaphors that arise from various uses of pins, including popping a balloon, pinning in place, and marking with a pin (such as a map position) so that something can be found quickly later.