WASHINGTON —A midnight tweet from President Donald Trump has social media trying to find a meaning in the mysterious term “covfefe.”

Trump tweeted just after midnight Eastern time on Wednesday: “Despite the constant negative press covfefe.”

The tweet immediately went viral and became one of the president’s more popular posts. Trump poked fun at the typo, tweeting around 6 a.m., “Who can figure out the true meaning of “covfefe” ??? Enjoy!”

Many on Twitter have supplied tongue-in-cheek meanings. One user joked that “covfefe” is already a popular name for babies in states that voted for Trump.

Dictionary publisher Merriam-Webster checked in with an eye-rolling tweet about people looking up “covfefe” on its website. Dozens of definitions have been submitted to the Urban Dictionary website, which crowdsources meanings for slang terms.

No explanation was given for how the errant tweet got posted. The president returned to his normal Twitter routine later in the morning by slamming Democrats over the probe into Russia’s meddling in the 2016 election.

So now it is reported that the Democrats, who have excoriated Carter Page about Russia, don’t want him to testify. He blows away their….

— Donald J. Trump (@realDonaldTrump) May 31, 2017

…case against him & now wants to clear his name by showing “the false or misleading testimony by James Comey, John Brennan…” Witch Hunt!

— Donald J. Trump (@realDonaldTrump) May 31, 2017

Kathy Griffin should be ashamed of herself. My children, especially my 11 year old son, Barron, are having a hard time with this. Sick!

— Donald J. Trump (@realDonaldTrump) May 31, 2017