English example sentences with "pin down"

Investigators are trying to pin down the cause of today's fire.

I want to schedule next week's product development meeting. Could you pin down a meeting room for me?

He was hard to pin down.

Tom was hard to pin down.

Tom is hard to pin down.

He's impossible to pin down.

Data from Hubble has allowed astronomers to make cosmic breakthroughs: pin down the age of the universe by measuring the brightness of stars in distant galaxies, watch comets plunge into Jupiter’s clouds, providing new insights into the physics of the stormy planet, and take the very first images of planet-forming disks around newborn stars, something astronomers knew had to be there but never dreamed they’d see with their own eyes.

Pin down the tablecloth, so it doesn't blow away in the breeze.