Tears are shed and very many flow (6)
I believe the answer is:
stream
'flow' is the definition.
(I know that flow can be written as stream)
'tears are shed and very many' is the wordplay.
'are shed' indicates anagramming the letters (shed can mean to give out or emit).
'and' says to put letters next to each other.
'very many' becomes 'm' (Roman numeral for a thousand. I am not sure about the 'very' bit.).
'tears' with letters rearranged gives 'strea'.
'strea'+'m'='STREAM'
Can you help me to learn more?
(Other definitions for stream that I've seen before include "Master of a tributary" , "One small river" , "Brook or small river" , "Running liquid" , "Brook, burn" .)