It means advanced state of meditation, absorption in the Self, Oneness, the mind becoming identified with the object of meditation.
Samadhi also called samāpatti, in Hinduism, Buddhism, Jainism, Sikhism and yogic schools is meditative absorption, attained by the practice of dhyāna.
Dhyana is (Sanskrit; Devanagari: ध्यान) or Jhāna (झान) (Pāli) means meditation in Hinduism. It is the seventh rung of the eight rungs of the ladder of yogic tradition.
Images @ Eminpee Fotography