The back bone of the company is its dedicated employees.

She is piggy-backing on her friend to cross the river.

She piggy-backed her little sister across the playground.

She gave her little brother a piggy-back ride.

She carried her little brother piggy-back across the field.

She piggy-backs her little sister when they play.

She gave her little brother a piggy-back ride.

Back engineering is the process of analyzing and understanding the design and functionality of a product by examining its structure and components.

Back-engineering is a common practice in the field of software development.

The company back-engineers their products to improve performance.