There was I thinking you people wouldn't care about "the real world" and preferred "reliable sources" (that you get to pick and judge) instead! Despite the term not being very widespread, it is used in the "real world" of people trying to sound scientific about the state of circumcision and the adoration thereof - see the links. "The real world" is thus exactly an argument why the synonym should be mentioned in the article. Spreading information is the purpose of wikipedia. Here we have a synonym for being circumcised belonging to an article that is in desperate need for a richer vocabulary about that state. Remember the "circumcised vs natural" wars? That problem would be reduced if there were actually more words - outside gym shower room talk - to describe the state of circumcision. Addition of the synonym (and subsequent, occasional use) would be without a doubt beneficial to the article as a whole.