fasten down

verb2

1. •
   To secure something so that it will not be moved away.

   • Everybody had to lash and fasten down anything that might get blown away or cause damage. — 2015
2. •
   To force a firm answer (from someone); to pin down.

   • For this reason, it is often difficult to fasten down a story-teller to his premises, and then to confront him with his aberrations. — 1865