Sample a bit of Seurat visiting gallery (5)
I believe the answer is:
taste
'sample' is the definition.
('taste' can be a synonym of 'sample')
'a bit of seurat visiting gallery' is the wordplay.
'a bit of' indicates taking the first letters.
'visiting' means one lot of letters goes inside another.
'gallery' becomes 'tate' (I've seen this before).
The first letter of 'seurat' is 's'.
's' inserted inside 'tate' is 'TASTE'.
(Other definitions for taste that I've seen before include "Delicacy" , "Judgment" , "Flavour; discernment" , "Liking (for)" , "Test for flavour" .)