(1):

(a.) Not brightly luminous; faintly light.

(2):

(a.) Faintly representative; hence, typical.

(3):

(a.) Hence, dark; obscure; gloomy; dim.

(4):

(a.) Full of shade or shadows; causing shade or shadow.

(5):

(a.) Unsubstantial; unreal; as, shadowy honor.