Back in the days, people used to communicate through letters.

If you want to become thin, you should cut back on the between-meal snacks.

I will text you back later.

He decided to back down and apologize for his mistake.

He paced back and forth in the room.

After years of financial struggle, the company finally managed to get back in the black.

When all else fails, I fall back on my family for support.

The car had to drop back in order to let the ambulance pass.

The item I ordered is currently on back order.

I live in a small town in the back of beyond.