Online, Girl Guides gasp about large aubergine (8)
I believe the answer is:
eggplant
'aubergine' is the definition.
(synonyms)
'online girl guides gasp about large' is the wordplay.
'online' becomes 'e' (abbreviation for electronic, e.g. in ecommerce).
'girl guides' becomes 'gg' (this might be a standard abbreviation which I don't know about).
'gasp' becomes 'pant' (synonyms).
'about' is an insertion indicator.
'large' becomes 'L' (eg in clothes sizes).
'pant' placed around 'l' is 'plant'.
'e'+'gg'+'plant'='EGGPLANT'
Can you help me to learn more?
(Other definitions for eggplant that I've seen before include "Its fruit is aubergine" , "Vegetable" , "It's also called aubergine" , "US name for aubergine" , "What goes into moussaka" .)