DuckCorp Dico

Found one definition

1.                 From English-日本語 (にほんご) FreeDict+WikDict dictionary ver. 2022.11.18:
                   
   
   
                   
                     
   bottom //ˈbɑtəm// //ˈbɒtəm// /[ˈbɑɾəm]/ <n>
   1. 裏
   ball or skein of thread; a cocoon
   2. ネコ, 凹, 受け
   gay sexual slang: penetrated partner in sex
   3. 底, 下部
   lowest part
   4. 底
   lowest part of a container