Start to record with two taps after introduction to Amazon Prime (4)
I believe the answer is:
arch
'prime' is the definition.
(thesaurus)
'start to record with two taps after introduction to amazon' is the wordplay.
'start to' suggests taking the first letters.
'with' means one lot of letters go next to another.
'two taps' becomes 'ch' (cold and hot taps. I am not sure about the 'two' bit.).
'after' is a charade indicator (letters next to each other).
'introduction to' indicates taking the first letters.
The initial letter of 'record' is 'r'.
The first letter of 'amazon' is 'a'.
'r' next to 'ch' is 'rch'.
'rch' after 'a' is 'ARCH'.
Can you help me to learn more?
(Other definitions for arch that I've seen before include "Curve of a bridge" , "Clever" , "Curve that spans an opening" , "one that may have fallen" , "Curved under-part of foot" .)