A bookish traveller (8)
I believe the answer is:
gulliver
'traveller' is the definition.
(I've seen this before)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for gulliver that I've seen before include "Lilliput visitor" , "Dean Swift's travelling man" , "Swift man" , "Dean Swift's fictional traveller" .)