Relevant language on the fourth of June (7)
I believe the answer is:
'relevant' is the definition.
(similar in meaning)
'language on the fourth of june' is the wordplay.
I cannot really understand how this works, but
'language' could be 'german' (German is an example) and 'german' is found in the answer.
'fourth of june' could be 'e' (4th letter of 'june') and 'e' is located in the answer.
No letters remain.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for germane that I've seen before include "Relevant - appropriate" , "apt" , "closely related" , "Relevant to current topic" , "Related to the matter in hand, relevant" .)