Get rid of fish and gyoza? (8)

I believe the answer is:
dumpling
'gyoza?' is the definition.
I can't tell whether this definition defines the answer.
'get rid of fish' is the wordplay.
'get rid of' becomes 'dump' (dumping is a kind of getting rid of).
'fish' becomes 'ling' (ling is a kind of fish).
'dump'+'ling'='DUMPLING'
'and' is the link.
Can you help me to learn more?
(Other definitions for dumpling that I've seen before include "fool!" , "a little fatty!" , "Stew doughball" , "who's overweight?" , "Dough served with stew" .)
