Locks in captive beside true vanishing point? (4,3)
I believe the answer is:
thin air
'vanishing point?' is the definition.
(I've seen this in another clue)
'locks in captive beside true' is the wordplay.
'locks' becomes 'hair' (locks can mean hair).
'captive' is an insertion indicator.
'beside' says to put letters next to each other (I've seen this in other clues).
'true' becomes 't' (this might be a standard abbreviation I've not previously seen).
'hair' placed around 'in' is 'hinair'.
'hinair' after 't' is 'THIN AIR'.
Can you help me to learn more?
(Other definitions for thin air that I've seen before include "Nothingness into/from which things might magically (dis)appear" , "Stratosphere" , "Vanish into . . . . . . ., say high on Everest" , "vanishing point?" , "one may disappear into?" .)