Compo absorbing a shock endlessly in beguilement (10)

I haven't cracked this one yet — but the brilliant team at Times for the Times have:

CEMENT (compo) containing [absorbing] A + JOL{t} (shock) [endlessly]. I admit to using a dictionary for this one to look up ‘compo’ but only read as far as it being a building material. I then worked out ‘cement’ myself. Compo in the surface reading is probably intended as a reference to a character of that name in the unfunniest TV sitcom ever made called Last of the Summer Wine. Inexplicably it ran for 37 years with all 295 episodes written by its creator, Roy Clarke.