A Lost Gemini In 1831

Riddle: Give me an inch and i'll give you a foot. Make sure your friends don't know what I'm about. Say my name 20 times and I'll shout. What am I?

Answer: The secret entrance to Jedediah Smith's home. Source: https://riddles.com/5058

Give me an inch and i'll give you a foot. Make sure your friends don't know what I'm about. Say my name 20 times and I'll shout. What am I? — A lost Gemini in 1831 by Winston Riddle