At my elementary school the black top (asphalt) was where all of the cool kids played. I don't remember what activities took place on the there, but just the phrase "black top" takes me back to my elementary days.
Today black top refers to a shirt that is the color black more often than it does asphalt, like the little embroidered gem I'm wearing in this post. I bought this top years ago because I was drawn to the embroidered details, and I haven't seen a top quite like it since. I'm a sucker for most embroidered pieces, but the black embroidery on the black top has such a neat look. Although this one isn't available, I rounded up some other black embroidered tops I like below.
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top: MADEWELL // jeans: JOE'S JEANS // shoes: J.CREW // bag: H&M // necklace: J.CREW FACTORY