Time locks securing home: into this one might vanish (4,3)
I believe the answer is:
thin air
'this one might vanish' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.
'time locks securing home' is the wordplay.
'time' becomes 't' (abbreviation).
'locks' becomes 'hair' (locks can mean hair).
'securing' is an insertion indicator.
'home' becomes 'in' ('he's home' can mean 'he's in').
'hair' placed around 'in' is 'hinair'.
't'+'hinair'='THIN AIR'
'into' is the link.
Can you help me to learn more?
(Other definitions for thin air that I've seen before include "Out of -- means from nowhere" , "vanishing point?" , "Stratosphere" , "Vanish into . . . . . . . - disappear completely" , "What one vanishes into?" .)