Poor country abandoned by Austria (6)
I believe the answer is:
hungry
'poor' is the definition.
(poor can mean hungry or in need)
'country abandoned by austria' is the wordplay.
'country' becomes 'hungary' (Hungary is an example).
'abandoned by' indicates named letters should be taken away.
'austria' becomes 'a'.
'hungary' with 'a' removed is 'HUNGRY'.
(Other definitions for hungry that I've seen before include "Keen" , "Empty" , "Craving food" , "hoping for a bite?" , "not satisfied" .)