Jack and Jill

Jack and Jill (plural Jack and Jills)

1. (chiefly attributive) A bachelor party or bachelorette party to which both men and women are invited.
   • 2001, Emily Ehrenstein, Laura Morin, Leah Furman, The Everything Wedding Etiquette Book:

     Men usually aren't as enthusiastic about shower games and the like as women, so “Jack and Jills” have a tendency to turn into regular parties.

2. (rhyming slang) A bill (as for a restaurant meal).
3. (rhyming slang) A till (cash register).
4. (rhyming slang) A hill.
5. (rhyming slang) A pill, especially the contraceptive pill.

• Jack and Jill suite

• hen night
• stag night