Flower getting hearts fluttering in yacht (8)
I believe the answer is:
hyacinth
'flower' is the definition.
(thesaurus)
'hearts fluttering in yacht' is the wordplay.
'hearts' becomes 'h' (abbreviation used in card games e.g. bridge).
'fluttering' indicates an anagram.
'in'+'yacht'='inyacht'
'inyacht' with letters rearranged gives 'yacinth'.
'h'+'yacinth'='HYACINTH'
'getting' is the link.
(Other definitions for hyacinth that I've seen before include "Flower, in an achy hint" , "Fragrantly-flowered bulb" , "A bulb; any hitch? (anag.)" , "Fragrant bulb" , "Popular flower grown from bulb" .)