Language spoken by many in the end (5)
I believe the answer is:
tamil
'language' is the definition.
(Tamil is an example)
'many in the end' is the wordplay.
'many' becomes 'M' (Roman numeral for a thousand).
'in' means one lot of letters goes inside another.
'the end' becomes 'tail' (tail is a kind of end).
'm' put into 'tail' is 'TAMIL'.
'spoken by' is the link.
This may not be right. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for tamil that I've seen before include "Member of South Indian people" , "South Indian people or language" , "Southern Indian language" , "One in race" , "Sri Lankan" .)