College seminar aims to unravel potential crossword idioms (12)

I believe the answer is:

americanisms

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'potential crossword idioms' is the definition.
'americanisms' can be an answer for 'idioms' (I have seen 'Transatlantic idioms ' mean 'americanisms' so perhaps 'idioms' could also mean 'americanisms'). I am not sure about the 'potential crossword' bit.

'college seminar aims to unravel' is the wordplay.
'college' becomes 'c'.
'to unravel' is an anagram indicator (I've seen 'unravelling' mean this).
'c'+'seminar'+'aims'='cseminaraims'
'cseminaraims' is an anagram of 'AMERICANISMS'.

Can you help me to learn more?

(Other definitions for americanisms that I've seen before include "Transatlantic idioms" , "Indigenous US words, eg Guys & Dolls" .)

I've seen this clue in The Independent.

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