A comprehensive volume bound to transport us (7)
I believe the answer is:
omnibus
I believe this is a quadruple definition!!
'a comprehensive' is the first definition.
(thesaurus)
'volume' is the second definition.
(I have seen 'Compendium volume ' mean 'omnibus' so perhaps 'volume' could also mean 'omnibus')
'bound to' is the third definition.
Both the answer and definition are adjectives. Maybe you can see an association between them that I can't see?
'transport us' is the fourth definition.
'omnibus' can be an answer for 'transport' (I've seen this before). I'm not certain of the 'us' bit.
Can you help me to learn more?
(Other definitions for omnibus that I've seen before include "Coach" , "Old vehicle - volume of works" , "Charabanc" , "Anthology" , "Extended programme" .)