Sentence:  For eager investors looking to score in a future IPO, the eight still-private martech unicorns might be tempting. That list includes Domo, Slack, Sprinklr, Shopify, and EventBrite, all of which have “<WSD>unicorned</WSD>,” or surpassed the billion-dollar valuation mark, in the past year or two. 
Meaning of the word marked with <WSD> tags:  To exceed a valuation of one billion U.S. dollars, while solely backed by venture capitalists.