secretcomponent

noun
UK /ˈsiː.krət kəmˈpəʊ.nənt/
US /ˈsiː.krət kəmˈpoʊ.nənt/

A secret component is a special part that is kept hidden.

The toy robot has a secret component inside that makes it light up.


OTHER MEANINGS

2. A hidden ingredient in a recipe or formula.

Grandma's cake has a secret component that makes it taste so good.

3. A confidential piece of a computer program or system.

The engineer protected the secret component of the software with a password.

4. A private part of a plan that only a few people know about.

The surprise party had a secret component that the birthday girl never guessed.