DuckCorp Dico

Found one definition

1.                 From English-日本語 (にほんご) FreeDict+WikDict dictionary ver. 2022.11.18:
                   
   
   
                   
                     
   goon //ɡoʊ.ɑn// //ɡuːn// //ɡəʊ.ɒn// <n>
   1. まぬけ
   a fool
   2. 暴力団員
   a thug