Bill Cosby won a legal battle against one of his accusers Thursday, an event so rare lately that he tweeted about his legal woes for the first time since December 2015.

A federal judge in Massachusetts dismissed a defamation lawsuit filed against Cosby by accuser Katherine McKee, ruling that she had no legal basis to claim the comedian defamed her by defending himself against her accusations.

Cosby was so pleased he tweeted the dismissal order, his first in more than a year responding to developments in his ongoing legal battles, including the criminal charges he's facing in suburban Philadelphia over a 13-year-old encounter.

Cosby has said virtually nothing in public since the rush of allegations against him began in the fall of 2014. His Twitter account shows his last post was a thank you to friends and fans, in December 2015. He started posting again in January of this year but only about civil rights history and heroes. Until Thursday.

McKee, one of some 60 women who have accused Cosby of drugging and/or sexually assaulting them in episodes dating back decades, came forward in late 2014 along with other women, claiming her friend of eight years had raped her in ...