Family express disapproval at daughter snorting line (5)
I believe the answer is:
blood
'family' is the definition.
(I've seen this in other clues)
'express disapproval at daughter snorting line' is the wordplay.
'express disapproval' becomes 'boo' (as in a crowd booing).
'at' says to put letters next to each other.
'daughter' becomes 'd' (genealogical abbreviation).
'snorting' means one lot of letters goes inside another (snort can mean to ingest through the nose).
'line' becomes 'l' (used when specifying particular lines from a poem).
'boo'+'d'='bood'
'bood' going around 'l' is 'BLOOD'.
(Other definitions for blood that I've seen before include "Red fluid" , "vital liquid" , "Circulating red liquid" , "Vein filler" , "Recorded and respected ancestry" .)