Crossword Genius

Hid a house round part of America (5)

Ross

I believe the answer is:

idaho

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

'part of america' is the definition.
(I know that Idaho is part of United States of America)

'hid a house round' is the wordplay.
'IDAHO' is hidden in amongst the letters.
But, I am unsure how this is indicated.

Can you help me to learn more?

(Other definitions for idaho that I've seen before include "US state in the Rocky Mountains" , "North-western state of America" , "State of north-west USA" , "US location" , "North-western US state" .)

I've seen this clue in The Mirror.
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