Embrace son interrupting strike (5)
I believe the answer is:
clasp
'embrace' is the definition.
(I've seen this before)
'son interrupting strike' is the wordplay.
'son' becomes 's'.
'interrupting' is an insertion indicator.
'strike' becomes 'clap' (clapping is a kind of striking**).
's' going within 'clap' is 'CLASP'.
(Other definitions for clasp that I've seen before include "Catch; embrace" , "Catch hold" , "Grasp firmly" , "Part of a necklace" , "Grip firmly" .)