Denote (verb)

1. To be a sign or symbol of; indicate.
2. To indicate or refer to directly.

Origin:

Late middle english: from latin denotare, from de- "away, completely" + notare "mark, note".

Examples:

1. The color red denotes danger.
2. The word "apple" denotes the fruit.
3. The shape denotes a triangle.
4. The sound of the bell denotes the end of class.
5. The expression on her face denotes sadness.