Crossword Genius

Ridiculous means by which Brazil may be entered? (12)

Ross

I believe the answer is:

sledgehammer

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

'ridiculous means' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps there's a link between them I don't understand?

'which brazil may be entered?' is the wordplay.
I cannot really see how this works, but
'be' could be 'am' and 'am' is found within the answer.
This explanation may well be incorrect...

'by' is the link.

Can you help me to learn more?

(Other definitions for sledgehammer that I've seen before include "OTT version of the Nutcracker?" , "Unsuitable nutcracker?" , "Unsubtle" , "Tool" , "Dealer of heavy blow" .)

I've seen this clue in The Times.
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