Online movement generates feeling (7)
I believe the answer is:
emotion
'feeling' is the definition.
(I know that emotion is a type of feeling)
'online movement' is the wordplay.
'online' becomes 'e' (abbreviation for electronic, e.g. in ecommerce).
'movement' becomes 'motion' (synonyms).
'e'+'motion'='EMOTION'
'generates' acts as a link.
(Other definitions for emotion that I've seen before include "Passion" , "Mental agitation" , "Feeling, say love or hate" , "eg Anger, fear, joy" , "Strong feeling as of love or hate" .)