The Parisian shelter out of sight (6)
I believe the answer is:
latent
'out of sight' is the definition.
(thesaurus)
'the parisian shelter' is the wordplay.
'the parisian' becomes 'la' (French for the).
'shelter' becomes 'tent' (tent is a kind of shelter**).
'la'+'tent'='LATENT'
(Other definitions for latent that I've seen before include "Hidden, not manifest" , "Existing but not yet developed, say ability" , "Potential, dormant" , "Unrealised, potential" , "Existing but not yet active or developed" .)