decacorn
A private startup with a valuation of US$10 billion or greater.
Today, the delinquent decacorn of Silicon Valley announced Uber Freight, a bid to bring the ride hailing model to trucking.
Where it comes from
From deca- (“ten”) + -corn (“horns”), by analogy with unicorn (literally “one horn”).
Adapted from the Wiktionary entry decacorn (CC BY-SA 4.0).