Quietly thrust into the water? (6)
I believe the answer is:
plunge
'the water?' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'quietly thrust' is the wordplay.
'quietly' becomes 'p' (p for piano and quiet).
'thrust' becomes 'lunge' (synonyms).
'p'+'lunge'='PLUNGE'
'into' acts as a link.
Can you help me to learn more?
(Other definitions for plunge that I've seen before include "Jump or dive into water" , "land in water" , "Thrust into liquid" , "Fall suddenly and uncontrollably" , "Descend steeply" .)