European rocket chicks regularly brought up in chitchat (8)
I believe the answer is:
schmooze
'chitchat' is the definition.
(I've seen this in another clue)
'european rocket chicks regularly brought up' is the wordplay.
'european' becomes 'E' (abbreviation e.g. EU).
'rocket' becomes 'zoom' (I've seen this in another clue).
'regularly' means one should take alternating letters (regularly take one letter, leave next etc.).
'brought up' says the letters should be written backwards (in a down clue, letters go up).
The alternate letters of 'chicks' are 'hcs'.
'e'+'zoom'+'hcs'='ezoomhcs'
'ezoomhcs' in reverse letter order is 'SCHMOOZE'.
'in' acts as a link.
(Other definitions for schmooze that I've seen before include "Talk amicably, perhaps seeking a favour" , "Gossip in a friendly way" , "Chat in friendly manner" , "Chat at a gathering" , "Talk intimately in order to manipulate" .)