Plants, 100, surrounded by spilt raisins (8)
I believe the answer is:
narcissi
'plants' is the definition.
The answer is an example.
'100 surrounded by spilt raisins' is the wordplay.
'100' becomes 'C' (Roman numeral).
'surrounded by' indicates putting letters inside.
'spilt' is an anagram indicator.
'raisins' with letters rearranged gives 'narissi'.
'c' put inside 'narissi' is 'NARCISSI'.
(Other definitions for narcissi that I've seen before include "Bulbous plants with yellow or white flowers" , "Flowers related to the daffodil" , "Flowers including daffodils and jonquils" , "Plants of a genus which includes daffodils" , "Plants that include the daffodil" .)