Six men accommodating model tourist (7)
I believe the answer is:
visitor
'tourist' is the definition.
(thesaurus)
'six men accommodating model' is the wordplay.
'six' becomes 'vi' (roman numeral).
'men' becomes 'or' (I've seen this in other clues).
'accommodating' is an insertion indicator.
'model' becomes 'sit' ('sit' can be a synonym of 'model'**).
'vi'+'or'='vior'
'vior' going around 'sit' is 'VISITOR'.
(Other definitions for visitor that I've seen before include "Seasonal migratory bird" , "who might stay?" , "Person turning up" , "Caller, guest" , "One coming calling" .)