Country album ultimately inadequate? (5)
I believe the answer is:
atlas
'country album' is the definition.
'atlas' can be an answer for 'album' (I have seen 'Album of maps' mean 'atlas' so perhaps 'album' could also mean 'atlas'). I am not sure about the 'country' bit.
'ultimately inadequate?' is the wordplay.
'ultimately' becomes 'atlast' (synonyms).
'inadequate?' means to remove the last letter (I've seen 'inadequate' mean this (an incomplete or inadequate form of the word)).
'atlast' with its last letter taken off is 'ATLAS'.
Can you help me to learn more?
(Other definitions for atlas that I've seen before include "Map collection" , "Titan who held up the sky" , "Book of maps or charts" , "Cartographer's work" , "travel book" .)