Parliament vacated after scream in vault (5)
I believe the answer is:
crypt
'vault' is the definition.
(I've seen this in another clue)
'parliament vacated after scream' is the wordplay.
'vacated' suggests removing the centre (internal letters vacate the word).
'after' says to put letters next to each other.
'scream' becomes 'cry' (synonyms).
'parliament' with its centre taken out is 'pt'.
'pt' put after 'cry' is 'CRYPT'.
'in' is the link.
(Other definitions for crypt that I've seen before include "Vault beneath a church" , "Church's basement" , "Undeground room" , "Underground room of church" , "Cellar in church" .)