To some extent ironic entreaty for place to meet (6)
I believe the answer is:
centre
'place to meet' is the definition.
(eg a leisure centre)
'to some extent ironic entreaty for' is the wordplay.
'to some extent' indicates the answer is hidden within the clue (I've seen 'extent of' mean this (I've seen this in other clues)).
'CENTRE' can be found hidden inside 'ironic entreaty for'.
(Other definitions for centre that I've seen before include "and this may follow 26, 25 [LEFT RIGHT]" , "Heart" , "Player" , "- forward; - punch" , "Exact middle point" .)