Oliver Jeffers has created another story that is perfectly their style of writing and illustrations and Sam Winston joins the creativity to add to the party in The Dictionary Story. While recently having become available, I did read via an online reader copy.
This time things are not what they seem at first glance. You think (or at least I did) that the book would be dictionaries and how they work. However, the author decides that to make the dictionary upset that, unlike the other books, they do not have a defined story inside them. They have all the words that have been, all the words that are in books, but they do not have them in order for an actual story. That is until the day the alligator decides to take a trip through the pages. At first it is fine, but then the alligator sees a donut who does not want to get eaten. Hijinks, spooks, and a runaway zebra ensues. 
This is all done with the illustrations that make it seem like you are inside an actual dictionary. The colors and details are both simple, but allow the reader to read them as much as the text. Things are muted, but not dull. And colors do pop when needed. There are clever placement of the text and images and sometimes they blend together. This is an art book as much as anything else. A unique theme and clever presentation makes this fun for most people, though the theme does feel older than maybe most picture book readers, but it would make a fun small group read aloud. Adults will appreciate things as much as your child reader/listener.