Rips Meek Mill Over Kobe Lyric

5:46 AM PT -- Meek Mill says he has apologized to Vanessa.

"I apologized to her in private earlier today not to the public," Meek early Tuesday morning. "Nothing I say on my page directed to a internet viral moment or the family of a grieving woman! If you care about someone grieving change the subject!"

Vanessa Bryant is NOT HAPPY with Meek Mill over a lyric referencing Kobe's helicopter crash ... calling it straight-up "disrespectful."

The Philadelphia rapper has been under serious fire over the past week for one particular lyric in his new collab with Lil Baby which says:

"This b**ch I'm f**kin' always tell me that she love me, but she ain't ever showed me // Yeah, and if I ever lack, I'm…