shadow

When a source of light is blocked by a solid object, the result is a shadow. Shadows can be created inside or outside.

The cat can see the shadow in front of him. Behind him is the sun. Together, the sun and the cat’s body create the shadow.
Venetian blinds cast shadows on this guitar.
A shadowy figure emerged from behind the dresser.
This narrow passageway remains in shadow almost the entire day.

The word "shadow" can also be used as a verb. In this case, it means to follow someone and learn through observation:

• Our newest employee, Edgar, is going to shadow some of the older employees to learn how the machines are operated.
• Do you mind if I shadow you for a few days to learn how to teach these classes?
• The police have been shadowing a suspected terrorist living in New York City.

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This page was first published on October 5, 2012. It was updated on April 19, 2015.