Definitions

1. noun

A large or powerful dog, especially one of a breed such as a German Shepherd or a Doberman Pinscher.

“The neighborhood kids are scared of the big dog in the house next door.”

2. noun

A person who is impressive or dominant in a particular field or activity.

“He’s a big dog in the tech industry, known for his innovative ideas.”

3. adjective

Large or powerful, especially in a way that inspires awe or fear.

“The big dog of a house on the hill loomed over the neighborhood.”