Club that'll bring tears to your eyes (4)
I believe the answer is:
mace
I believe this clue is a double definition.
'club' is the first definition.
(I've seen this before)
'that'll bring tears to your eyes' is the second definition.
(reference to the irritant chemical)
(Other definitions for mace that I've seen before include "put on the rack?" , "Medieval weapon or kind of spice" , "Tear gas - spice" , "Ceremonial staff or kind of spice" , "Staff of office and a spice" .)