American writer about North America? A breathtaking experience (6)
I believe the answer is:
apnoea
'a breathtaking experience' is the definition.
The definition suggests a singular noun which matches the answer.
'american writer about north america?' is the wordplay.
'american' becomes 'a' (common abbreviation - e.g. in organisation names).
'writer' becomes 'poe' (Edgar Allan Poe).
'about' means one lot of letters goes inside another.
'north' becomes 'N' (abbreviation).
'america?' becomes 'a' (common abbreviation - e.g. in organisation names).
'poe' enclosing 'n' is 'pnoe'.
'a'+'pnoe'+'a'='APNOEA'
Can you help me to learn more?
(Other definitions for apnoea that I've seen before include "Asphyxia" , "Temporary cessation of breathing, when asleep" , "choke" , "Transient cessation of breathing" , "Temporary cessation of breathing, in sleep say" .)