What does adumbrate mean?
The definition of adumbrate
Ad*um”brate, v. t.
Etym: [L. adumbratus, p. p. of adumbrare; ad + umbrare to shade; umbra shadow.]

1 To give a faint shadow or slight representation of; to outline; to shadow forth. Both in the vastness and the richness of the visible universe the invisible God is adumbrated. L. Taylor.
2 To overshadow; to shade.