### Clue: Describing ring fisherman quietly leaves it's seized by New York (8)
### Answer: ETERNITY 
 ### Explanation: Definition: Describing ring
 "Peter"(the biblical apostle, originally a fisherman) **minus**(… leaves) "p"(abbrev. for "piano", musical instruction of play quietly) + [ IT **contained in**(…'s seized by) NY(abbrev. for New York) ].
Defn: … given by husband to wife, on a significant occasion, to symbolise never-ending love.