Herbalists holiday island (4)
I believe the answer is:
bali
'holiday island' is the definition.
(Bali is a popular holiday destination)
'herbalists' is the wordplay.
'BALI' is hidden within the letters.
However, I'm uncertain how this is indicated.
Can you help me to learn more?
(Other definitions for bali that I've seen before include "Holiday island to the east of Java" , "Indonesian island, east of Java" , "Middle East country" , "Javanese island" , "mountainous island" .)