Chair here (own Scots pine, for example) (7)
I believe the answer is:
aintree
'chair here' is the definition.
(the Chair is a feature of Aintree race course)
'own scots pine for example' is the wordplay.
'own' becomes 'ain' ('ain' can be a synonym of 'own').
'scots pine for example' becomes 'tree' (scots pine is a kind of tree).
'ain'+'tree'='AINTREE'
(Other definitions for aintree that I've seen before include "place for horse racing" , "Grand National course" , "Here they run" , "Liverpool race course" , "Liverpool's racecourse" .)