Part of bulb broke in two (5)
I believe the answer is:
clove
I believe this is a double definition.
'part of bulb' is the first definition.
'broke in two' is the second definition.
(Other definitions for clove that I've seen before include "Spice, used whole or ground" , "Garlic segment" , "Dried flower bud spice" , "Aromatic bud" , "Split; spice" .)