In Terry Pratchett's novel, "The Wyrd Sisters", the word "latty" is frequently used. From the context I can figure out that it means some kind of cart (used by traveling performers in the story), but I could not find it in any dictionary. Does it mean what I think it does? Where does it come from, in what time period was it used?
If you do not "just remember it" from somewhere, please include your sources in the answer, so I could check myself next time. Thank you! :)