Bank on introduction of Ezra Pound verse (8)
I believe the answer is:
doggerel
'verse' is the definition.
(I know that doggerel is a type of verse)
'bank on introduction of ezra pound' is the wordplay.
'bank' becomes 'dogger' (Dogger Bank is a sandbank).
'on' means one lot of letters go next to another (in a down clue, letters appear on others).
'introduction of' suggests taking the first letters.
'pound' becomes 'L' (the pound sign is based on an L).
The first letter of 'ezra' is 'e'.
'dogger'+'e'+'l'='DOGGEREL'
(Other definitions for doggerel that I've seen before include "Trite verse" , "Worthless verse - gored leg (anag)" , "Poor poetry" , "Badly written poetry" , "Poor quality comic or trivial verse" .)