Open English Wordnet
Nouns
(n)shadowshade within clear boundaries (n)shadowa premonition of something adverse“a shadow over his happiness” (n)trace, vestige, tincture, shadowan indication that something has been present“there wasn't a trace of evidence for the claim”,
“a tincture of condescension” (n)shadowrefuge from danger or observation“he felt secure in his father's shadow” (n)shadowa dominating and pervasive presence“he received little recognition working in the shadow of his father” (n)shadowan inseparable companion“the poor child was his mother's shadow” Verbs
(v)shadowfollow, usually without the person's knowledge“The police are shadowing her”