[n] refuge from danger or observation; "he felt secure in his father's shadow"
[n] something existing in perception only; "a ghostly apparition at midnight"
[n] a clue that something has been present; "there wasn't a trace of evidence for the claim"
[n] a premonition of something adverse; "a shadow over his happiness"
[n] an unilluminated area; "he moved off into the darkness"
[n] an inseparable companion; "the poor child was his mother's shadow"
[n] a spy employed to follow someone and report their movements
[n] shade within clear boundaries
[v] follow, usually without the person's knowledge; "The police are shadowing her"
[v] cast a shadow
[v] cast a shadow over
apparition, dark, darkness, dwarf, overshadow, phantom, shade, shade off, shadower, tail, trace, vestige