From The Collaborative International Dictionary of English v.0.48:
Shadow \Shad"ow\, v. t. [imp. & p. p. Shadowed; p. pr. & vb. n. Shadowing.] [OE. shadowen, AS. sceadwian. See adow, n.] 1. To cut off light from; to put in shade; to shade; to throw a shadow upon; to overspead with obscurity. [1913 Webster]
The warlike elf much wondered at this tree, So fair and great, that shadowed all the ground. --Spenser. [1913 Webster]
2. To conceal; to hide; to screen. [R.] [1913 Webster]
Let every soldier hew him down a bough. And bear't before him; thereby shall we shadow The numbers of our host. --Shak. [1913 Webster]
3. To protect; to shelter from danger; to shroud. [1913 Webster]
Shadowing their right under your wings of war. --Shak. [1913 Webster]
4. To mark with gradations of light or color; to shade. [1913 Webster]
5. To represent faintly or imperfectly; to adumbrate; hence, to represent typically. [1913 Webster]
Augustus is shadowed in the person of [AE]neas. --Dryden. [1913 Webster]
6. To cloud; to darken; to cast a gloom over. [1913 Webster]
The shadowed livery of the burnished sun. --Shak. [1913 Webster]
Why sad? I must not see the face O love thus shadowed. --Beau. & Fl. [1913 Webster]
7. To attend as closely as a shadow; to follow and watch closely, especially in a secret or unobserved manner; as, a detective shadows a criminal. [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Shadow \Shad"ow\ (sh[a^]d"[-o]), n. [Originally the same word as shade. [root]162. See Shade.] 1. Shade within defined limits; obscurity or deprivation of light, apparent on a surface, and representing the form of the body which intercepts the rays of light; as, the shadow of a man, of a tree, or of a tower. See the Note under Shade, n., 1. [1913 Webster]
2. Darkness; shade; obscurity. [1913 Webster]
Night's sable shadows from the ocean rise. --Denham. [1913 Webster]
3. A shaded place; shelter; protection; security. [1913 Webster]
In secret shadow from the sunny ray, On a sweet bed of lilies softly laid. --Spenser. [1913 Webster]
4. A reflected image, as in a mirror or in water. --Shak. [1913 Webster]
5. That which follows or attends a person or thing like a shadow; an inseparable companion; hence, an obsequious follower. [1913 Webster]
Sin and her shadow Death. --Milton. [1913 Webster]
6. A spirit; a ghost; a shade; a phantom. "Hence, horrible shadow!" --Shak. [1913 Webster]
7. An imperfect and faint representation; adumbration; indistinct image; dim bodying forth; hence, mystical representation; type. [1913 Webster]
The law having a shadow of good things to come. --Heb. x. 1. [1913 Webster]
[Types] and shadows of that destined seed. --Milton. [1913 Webster]
8. A small degree; a shade. "No variableness, neither shadow of turning." --James i. 17. [1913 Webster]
9. An uninvited guest coming with one who is invited. [A Latinism] --Nares. [1913 Webster]
I must not have my board pastered with shadows That under other men's protection break in Without invitement. --Massinger. [1913 Webster]
Shadow of death, darkness or gloom like that caused by the presence or the impending of death. --Ps. xxiii. 4. [1913 Webster]