Makeshift home: one to call round (7)

I believe the answer is:

interim

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'makeshift' is the definition.
Both the definition and answer are adjectives. Maybe they are linked in a way I don't understand?

'home one to call round' is the wordplay.
'home' becomes 'in' ('he's home' can mean 'he's in').
'one' becomes 'i' (Roman numeral).
'to call' becomes 'term' (terming is a kind of calling).
'round' is an insertion indicator.
'i' put within 'term' is 'terim'.
'in'+'terim'='INTERIM'

Can you help me to learn more?

(Other definitions for interim that I've seen before include "Meantime; temporary" , "Caretaker" , "temporary period" , "Stopgap" , "Meantime - provisional" .)

I've seen this clue in The Sun.

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