Horseradish holder (3)
I believe the answer is:
jar
'horseradish holder' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for jar that I've seen before include "Shock; container" , "Disturbing effect" , "Glass of beer; clash" , "Glass of beer (colloq.)" , "Cylindrical container as for jam" .)