Definition of "Shadow" :

noun: refuge from danger or observation

"He felt secure in his father's shadow."

noun: something existing in perception only

noun: an indication that something has been present

noun: a premonition of something adverse

"A shadow over his happiness."

noun: an unilluminated area

noun: an inseparable companion

"The poor child was his mother's shadow."

noun: a spy employed to follow someone and report their movements

noun: a dominating and pervasive presence

"He received little recognition working in the shadow of his father."

noun: shade within clear boundaries

verb: follow, usually without the person's knowledge

"The police are shadowing her."

verb: make appear small by comparison

verb: cast a shadow over