tokus

[taw-khuh s, too kh-uh s] /ˌtɔ xəs, ˈtʊx əs/
noun, Slang.
1.
the buttocks.
Also, tochis, tuchis.
Origin
1910-15, Americanism; < Yiddish tokhes < Hebrew taḥath under
Slang definitions & phrases for tokus

tokus

noun

(also tokis or tuchis or tuckus or tush or tushie or tushy) The buttocks; ass, bottom: A frequent euphemism for ass: knocked him right square on his tokus/ He shakes his tushie with elegant languor/ bumps her tush gently along

[1914+; fr Yiddish; tush forms are affectionate, used esp with children]