Withdrawal of 101 meeting points (4)
I believe the answer is:
foci
'meeting points' is the definition.
(I've seen this in another clue)
'withdrawal of 101' is the wordplay.
'withdrawal' is a reversal indicator (I've seen 'withdrawal of' mean this).
'101' becomes 'CI' (roman numerals).
'of' written backwards gives 'fo'.
'fo'+'ci'='FOCI'
(Other definitions for foci that I've seen before include "Centres" , "Points for attention" , "Central points (of the greatest activity)" , "fixed points" , "targets" .)