Choice article in heraldic gold (5)
I believe the answer is:
other
'choice' is the definition.
Both the definition and answer are adjectives. Maybe there's a link between them I don't understand?
'article in heraldic gold' is the wordplay.
'article' becomes 'the' (the definite article).
'in' indicates putting letters inside.
'heraldic gold' becomes 'or' ('or' is the heraldic name for gold. I am not sure about the 'heraldic' bit.).
'the' going inside 'or' is 'OTHER'.
Can you help me to learn more?
(Other definitions for other that I've seen before include "Different; alternate" , "Very unusual" , "Alternate; additional" , "Different, disparate" , "Different, alternative" .)