Gold firm in Republican America making noise (7)

I believe the answer is:

raucous

I'm a little stuck... Click here to teach me more about this clue!

'gold firm in republican america making noise' is the definition.
I can't judge whether this definition defines the answer.

'gold firm in republican america' is the wordplay.
'gold' becomes 'Au' (Au is the chemical symbol for gold).
'firm' becomes 'co' (a firm is a company).
'in' is an insertion indicator.
'republican' becomes 'r' (abbreviation).
'america' becomes 'US' (United States).
'au'+'co'='auco'
'r'+'us'='rus'
'auco' put into 'rus' is 'RAUCOUS'.

Can you help me to learn more?

(Other definitions for raucous that I've seen before include "Rowdy - strident" , "Loud and discordant" , "Unpleasantly noisy" , "Harsh, noisy" , "Harsh in sound" .)

I've seen this clue in The Sun.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.