Overburdened vehicle - we turned dial to Radio National (8)
I believe the answer is:
careworn
'overburdened' is the definition.
Both the answer and definition are adjectives. Maybe they are linked in a way I don't understand?
'vehicle we turned dial to radio national' is the wordplay.
'vehicle' becomes 'car' (car is a kind of vehicle).
'turned' says the letters should be written in reverse.
'dial' becomes 'o'.
'to' says to put letters next to each other.
'radio national' becomes 'rn' (this might be a standard abbreviation of which I'm unaware).
'we' written backwards gives 'ew'.
'car'+'ew'+'o'+'rn'='CAREWORN'
Can you help me to learn more?
(Other definitions for careworn that I've seen before include "Haggard, drawn" , "worn-out" , "Run down by anxiety" , "Showing signs of stress and worry" , "Tired, unhappy" .)