In one version, Peter Pan's land (5)
I believe the answer is:
never
'in one version peter pan's land' is the definition.
I can't tell whether this definition defines the answer.
'in one version peter' is the wordplay.
'in' indicates a hidden word.
'NEVER' can be found hidden inside 'one version peter'.
Can you help me to learn more?
(Other definitions for never that I've seen before include "On no account" , "Not in a million years!" , "' - - Say - - Again': Bond film" , "Certainly not!" , "Strong negative" .)