Open-air full moon party in tour rocks (7)
I believe the answer is:
outdoor
'open-air' is the definition.
(similar in meaning)
'full moon party in tour rocks' is the wordplay.
'full moon party' becomes 'doo' (I am not sure about this - if you are sure you should believe this answer much more).
'in' is an insertion indicator.
'rocks' indicates an anagram.
'tour' anagrammed gives 'outr'.
'doo' placed inside 'outr' is 'OUTDOOR'.
Can you help me to learn more?
(Other definitions for outdoor that I've seen before include "External" , "Done in the open" , "Al fresco" , "Not done in the house" , "This sport is not under a roof" .)