In a startling revelation from Amy Odell’s new biography “Gwyneth,” it is claimed that Gwyneth Paltrow had a less-than-kind nickname for former friend Winona Ryder.

According to the Daily Mail, Paltrow referred to Ryder as “Vagina Ryder” after suspecting that her ex-friend was exaggerating stories to garner attention during the 1990s.

Odell’s book suggests that the pair’s friendship deteriorated shortly after Paltrow’s breakup with Brad Pitt — whom she dated between 1994 and 1997 — and after she moved into Ryder’s apartment in New York City.

At the time, Ryder, now 53, was dating Matt Damon while Paltrow, now 52, began a romance with Damon’s best friend, Ben Affleck.

According to Odell, Ryder and Damon once got into a fight and she rushed to tell him she had been robbed.

Odell claimed this happened twice, and Damon was empathetic to his then-girlfriend.

Meanwhile, Paltrow allegedly believed that the “Stranger Things” star was making up the robberies for the sake of attention.

“Damon consoled her, but Gwyneth and Affleck believed Ryder fabricated the robberies as a ploy for attention (there’s no proof of this),” Odell writes in the book, per the Daily Mail.

“Gwyneth was annoyed that Damon couldn’t see it. Though Damon was kind to her friends, Gwyneth didn’t seem to like him after that.”

“Her friendship with Ryder would only deteriorate further, and Gwyneth gave her the nickname ‘Vagina Ryder,’” Odell claims.

Reps for Paltrow and Ryder weren’t immediately available to Page Six for comment.

Elsewhere in the book, Odell claims, per People, that Paltrow swiped the lead of 1998’s “Shakespeare in Love” from Ryder after originally turning it down.

“After a story about Gwyneth allegedly stealing the script from Winona’s coffee table reached the media, Gwyneth told friends that Ryder had started the rumor, and insisted she’d received the script through her agent,” the author alleges.

While Ryder or Paltrow never addressed their alleged feud, the latter previously spoke of a “frenemy” who wanted to see her demise in a 2009 Goop blog post.

“Back in the day, I had a ‘frenemy’ who, as it turned out, was pretty hell-bent on taking me down,” Paltrow wrote at the time. “This person really did what they could to hurt me.”

“I was deeply upset, I was angry, I was all of those things you feel when you find out that someone you thought you liked was venomous and dangerous,” the “Iron Man” star continued.

“I restrained myself from fighting back. … But one day I heard that something unfortunate and humiliating had happened to this person. And my reaction was deep relief and happiness.”

Odell also details Paltrow’s alleged friendship fallout with Madonna in the book.