sixty-nine

noun
six·ty-nine | \ˌsiks-tē-ˈnīn \

Definition of sixty-nine 

1 : a number that is one more than 68 — see Table of Numbers

2 : mutual cunnilingus and fellatio : mutual fellatio : mutual cunnilingus

First Known Use of sixty-nine

1609, in the meaning defined at sense 1

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The first known use of sixty-nine was in 1609

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