Several books in one large vehicle (7)
I believe the answer is:
omnibus
This clue is a quadruple definition!!
'several books' is the first definition.
(I've seen this before)
'in' is a link.
'one' is the second definition.
(thesaurus)
'large' is the third definition.
Both the answer and definition are adjectives. Maybe there's a link between them I don't understand?
'vehicle' is the fourth definition.
(I've seen this before)
Can you help me to learn more?
(Other definitions for omnibus that I've seen before include "public service" , "Large public vehicle" , "Compendium volume" , "edition of book" , "one conveying passengers" .)