Garlands from exotic isle? (4)
I believe the answer is:
leis
'garlands' is the definition.
('lei' can be a synonym of 'garland')
'exotic isle?' is the wordplay.
'exotic' indicates an anagram (an unusual form of the letters).
'isle' is an anagram of 'LEIS'.
'from' acts as a link.
(Other definitions for leis that I've seen before include "Isle (anag) - Polynesian garlands" , "Hawaiian garlands" .)