Said to be thrust in opposite directions (6)
I believe the answer is:
spoken
'said' is the definition.
(thesaurus)
'thrust in opposite directions' is the wordplay.
'thrust' becomes 'poke' (poking is a kind of thrusting).
'in' is an insertion indicator.
'opposite directions' becomes 'sn' (opposite compass points).
'poke' put into 'sn' is 'SPOKEN'.
'to be' is the link.
(Other definitions for spoken that I've seen before include "released from trap" , "Uttered through the medium of speech" , "Voiced" , "Verbalised" , "Said" .)