He practiced singing using a backing track.

He is well versed in the use of the backsword.

My mailbox is full of spam.

He saw the ball hit the backstop and thought it was a home run.

His vulgar and thick voice echoed throughout the room.

Music is playing in my background.

The splenius capitis muscle is a part of the neck muscles, helping to tilt the head backwards.

I was born and raised in Buckinghamshire.

There are a lot of new products in the backrooms of this store.

Whenever I go shopping at the supermarket, I always bring a reusable shopping bag.