All 6 Uses

illustrate
in
The Blind Assassin
(Edited)

I was reading an illustrated book for children called Great Men of History.
p. 90.3

illustrated = accompanied by pictures
I'd pick out books that interested me: A Tale of Two Cities, by Charles Dickens; Macaulay's histories; The Conquest of Mexico and The Conquest of Peru, illustrated.
p. 155.2

illustrated = with pictures or drawings
Instead she would copy pictures, or else she'd colour in the black-and-white illustrations in thick, erudite books of travel and history with her coloured pencils.
p. 157.5 *

illustrations = pictures
That was from a book by Sir Henry Layard, who'd discovered the statues in the ruins of Nineveh and had them shipped to England; they were said to be illustrations of the angels described in the Book of Ezekiel.
p. 157.8 *

illustrations = things that help clarify or demonstrate
…the improving lectures illustrated by lantern slides —
p. 158.3

illustrated = accompanied by pictures or drawings
The best thing is to picture the cover illustration the boys will likely come up with, and then go on from there.
p. 250.8

illustration = drawing

Definitions:

(1) (illustrate as in: as illustrated by this example)
to help make clear -- typically by example
(2) (illustrate as in: an illustrated children's book)
to draw pictures (or provide photographs) to accompany a book or other writing
(3) (meaning too rare to warrant focus)