Embrace son beset by worries (6)
I believe the answer is:
caress
'embrace' is the definition.
(I've seen this before)
'son beset by worries' is the wordplay.
'son' becomes 's' (genealogical abbreviation for son).
'beset by' means one lot of letters goes inside another ('beset' could historically mean 'cover').
'worries' becomes 'cares' (I've seen this in another clue).
's' inserted into 'cares' is 'CARESS'.
(Other definitions for caress that I've seen before include "Gentle stroke" , "Stroke gently" , "Affectionate stroke" , "Stroke, fondle" , "Stroke lovingly" .)