formal + literary. —used with a singular noun to refer to a large number of things or people I've been there many a time. Many a tale was told. Many a man has tried but few men have succeeded.

What is used with many a?

Both many and many a convey the same meaning that is "a large number of". The only difference is that many is used with countable plural nouns followed by plural verb while many a is followed by a singular countable noun and takes a singular verb with it. E.g.: Yes you can use 'a/an' after many.

What does many a one mean?

many a one in British English

many people.