Impression of the Yorkshire people (5)
I believe the answer is:
trace
'impression' is the definition.
(thesaurus)
'the yorkshire people' is the wordplay.
'the yorkshire' becomes 't' (I've seen this in other clues).
'people' becomes 'race' (people can mean a national group or race).
't'+'race'='TRACE'
'of' acts as a link.
(Other definitions for trace that I've seen before include "Minute quantity" , "Discover whereabouts" , "mark" , "Element" , "description of some elements?" .)