Language of Greece has arcane meaning initially (5)
I believe the answer is:
ogham
'language' is the definition.
Both the definition and answer are singular nouns.
Perhaps they are linked in a way I don't understand?
'of greece has arcane meaning initially' is the wordplay.
'of' becomes 'o'.
'initially' suggests taking the first letters.
The first letters of 'greece has arcane meaning' is 'gham'.
'o'+'gham'='OGHAM'
Can you help me to learn more?
(Other definitions for ogham that I've seen before include "Celtic characters" , "Old Irish alphabetical system with lines and notches in stone" , "Old British characters" , "character forming" , "set of characters" .)