Screened nowadays in outbuilding (6)
I believe the answer is:
shaded
'screened' is the definition.
(thesaurus)
'nowadays in outbuilding' is the wordplay.
'nowadays' becomes 'AD' (AD, Anno Domini, as opposed to BC, Before Christ).
'in' indicates putting letters inside.
'outbuilding' becomes 'shed' (outbuilding in a garden).
'ad' going inside 'shed' is 'SHADED'.
(Other definitions for shaded that I've seen before include "Sheltered" , "Crayoned in" , "Coloured in; screened from direct light" , "In comparative darkness" , "Protected from heat and light" .)