1. A box of assorted chocolates made by Whitman's, a US confectionary. Primarily heard in US. I'm bringing a Whitman's sampler to the dinner tonight. I love chocolate, so I was thrilled that my boyfriend gave me a Whitman's sampler for Valentine's Day!
2. By extension, an assortment of something. Primarily heard in US. Boy, this recital is a real Whitman's sampler—a piano virtuoso was just followed by a bunch of kids murdering "Hot Cross Buns" on the flute. The client wants a lot of options, so be sure to give him a Whitman's sampler of designs.