Love helping in lecture (7)
I believe the answer is:
oration
'lecture' is the definition.
(I've seen this before)
'love helping' is the wordplay.
'love' becomes 'o' (In tennis, 'love' means 'zero').
'helping' becomes 'ration' (I've seen this before).
'o'+'ration'='ORATION'
'in' acts as a link.
(Other definitions for oration that I've seen before include "Major speech" , "A formal or ceremonial speech" , "Making a speech" , "Type 16 [OF SPEECH]" , "lecture" .)