Definition of trounce verb from the Oxford Advanced American Dictionary

 

trounce

 verb
verb
NAmE//traʊns//
 
trounce somebody(formal)Verb Forms present simple I / you / we / they trounce
 
he / she / it trounces
 
past simple trounced
 
-ing form trouncing
 
 
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to defeat someone completely Brazil trounced Italy 5–1 in the final.
See the Oxford Advanced Learner's Dictionary entry: trounce