Broke family thrown into street (5)
I believe the answer is:
skint
'broke' is the definition.
(both can mean struggling financially)
'family thrown into street' is the wordplay.
'family' becomes 'kin' (synonyms).
'thrown into' indicates putting letters inside.
'street' becomes 'st' (abbreviation).
'kin' going into 'st' is 'SKINT'.
(Other definitions for skint that I've seen before include "Impoverished" , "bust" , "Penniless (slang)" , "Stony-broke" , "On one's uppers" .)