Put a pin in it

Meaning

Save something for later discussion.

Usage

Used during meetings for deferring topics.

Origin & History

Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.

Note-taking metaphor of marking a spot with a pin.

Common in corporate parlance over the past few decades.