definition of
shadow

[1] #1 shadow n. shade within clear boundaries. wn

[2] #2 shadow n. [darkness, dark] an unilluminated area; "he moved off into the darkness". wn

[3] #3 shadow v. follow, usually without the person's knowledge; "The police are shadowing her". wn

[4] #4 shadow n. [apparition, phantom, phantasm, phantasma, fantasm] something existing in perception only; "a ghostly apparition at midnight". wn

[5] #5 shadow n. a premonition of something adverse; "a shadow over his happiness". wn