put to bed

verb4

1. •
   To help someone, for example a child, go to bed.
2. •
   To prepare (a newspaper) for printing.
3. •
   To finalise the result, seal a win.

   • Mame Diouf missed a chance to put the game to bed when he fired straight at Carson. — 2010
4. •
   To dispel.

   • I hope we can put those doubts to bed.