It's bound to have maps (5)
I believe the answer is:
atlas
'maps' is the definition.
(printed collection of maps)
'it's bound to' is the wordplay.
'it' becomes ''t' (abbreviation. e.g. in 'tis).
'bound' means one lot of letters goes inside another.
'to' becomes 'alas' (I can't explain this - if you can you should believe this answer much more).
't' going inside 'alas' is 'ATLAS'.
'have' is the link.
Can you help me to learn more?
(Other definitions for atlas that I've seen before include "N. African mountains; a Titan" , "Sort of book" , "world record?" , "Map collection" , "Giant" .)