Ignore ref's order - he's not from round here (9)
I believe the answer is:
foreigner
'he's not from round here' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'ignore ref's order' is the wordplay.
'order' indicates anagramming the letters.
'ignore'+'ref'='ignoreref'
'ignoreref' with letters rearranged gives 'FOREIGNER'.
Can you help me to learn more?
(Other definitions for foreigner that I've seen before include "Stranger, outsider" , "One from abroad" , "Alien" , "asylum seeker?" , "chauvinist holds in contempt" .)