Native American trails outside of Edmonton in shade (10)
I believe the answer is:
indigenous
'native' is the definition.
(similar in meaning)
'american trails outside of edmonton in shade' is the wordplay.
'american' becomes 'us' (abbreviation for United States).
'trails' says to put letters next to each other (some letters follow or trail others).
'outside of' suggests removing the centre.
'in' is an insertion indicator.
'shade' becomes 'indigo' (shade of blue).
'edmonton' with its middle removed is 'en'.
'en' going within 'indigo' is 'indigeno'.
'us' after 'indigeno' is 'INDIGENOUS'.
(Another definition for indigenous that I've seen is " Native".)