many an
Speech parts
1. many an - Adjective Satellite
2. many an - Determiner
Meaning
each of a large indefinite number
Source: WordNetSynonyms
Examples
I am not sure that it is of the first importance that you should be happy. Many an unhappy man has been of deep service to himself and to the world.
I maintain that many an inventor, many a diplomat, many a financier is a sounder philosopher than all those who practice the dull craft of experimental psychology.
Practice and thought might gradually forge many an art.
If thoughts were legal witnesses, many an honest man would be proved a rogue.
Many an honest heart beats under a ragged coat.
Many an injury comes from a fool's speech.