threefer

Shortened form of three-for-one or three-in-one, modeled after twofer.

threefer (plural threefers)

1. Something sold at a discount of three for the price of one.
   • 2015 February 18, Ken Bannister, “From Our Perspective: Revisiting the Power of Twofers and Threefers”, in Efficient Plant‎^[1]:

     Thus, it was interesting to see that when the ISO 55001 Asset Management Standard was released last year, it also looks for an asset-management program to deliver its own twofers and threefers.

2. Something that has three functions or elements.
   • 2008 February 19, Clyde Haberman, “New Yorker in the White House? Seems Like a Long Shot Now”, in The New York Times‎^[2]:

     We were so sure, some among us, anyway, that we would have two locals fighting for the big prize in November: the Republican former mayor, Rudolph W. Giuliani, and the Democratic junior senator, Hillary Rodham Clinton. We even prepared for a threefer in case the present mayor, Michael R. Bloomberg, he of ever-evolving party status, jumped into the race because he figured the rest of America couldn’t do without him.

   • 2012 November 29, Eric Wilson, “Shopping at the Plaza”, in The New York Times‎^[3]:

     “It’s a threefer, not a twofer,” she said, holding a clutch-within-a-clutch that costs $109.90 and can be worn three ways.

   • 2024 May 26, Gabriele Regalbuto , Ashlyn Messier, “Adam Sandler's friends and the films they've starred in opposite the actor”, in Fox News‎^[4]:

     "I'm so busy talking to him and Jennifer Aniston about doing a threefer, if you will," Barrymore told "Entertainment Tonight." "I really want to make it happen. Timing is everything."