Definitions

1. noun

A type of mining loader or a type of armored vehicle; a woman’s given name.

“The coal miner operated a large Bertha.”

2. proper noun

A specific woman’s name, often associated with a particular person.

“Bertha is a common name in Scandinavian countries.”

3. noun

A type of tunnel boring machine.

“The Bertha was used to dig through the mountain pass.”