What does "forget" mean?

Additional senses

1. 2.Hath thy knee forget to bow Shak.
2. 3.To treat with inattention or disregard; to slight; to neglect. Can a woman forget her sucking child . . . Yes, they may forget, yet will I not forget thee. Is. xlix.
3. 4.To forget one's self. (a) To become unmindful of one's own personality; to be lost in thought. (b) To be entirely unselfish. (c) To be guilty of what is unworthy of one; to lose one's dignity, temper, or self-control.