At home, tucked into pineapple drink (9)
I believe the answer is:
grenadine
'drink' is the definition.
(drink made from pomegranates)
'at home tucked into pineapple' is the wordplay.
'at home' becomes 'in' ('I'm in' can mean 'I'm at home').
'tucked into' indicates putting letters inside.
'pineapple' becomes 'grenade' (pineapple can informally mean a grenade).
'in' put inside 'grenade' is 'GRENADINE'.
(Other definitions for grenadine that I've seen before include "Pomegranate juice syrup" , "silk fabric" , "West Indian" , "Sweet cordial" , "Cordial made from pomegranates" .)