Complex sentence: Trāṭaka (Sanskrit n. त्राटक "trāṭaka", "tratak", "trataka": "to look, or to gaze") is a method of meditation that involves staring at a single point such as a small object, black dot or candle flame.
Split into simpler sentences: Trāṭaka (Sanskrit n. त्राटक "trāṭaka", "tratak", "trataka": "to look, or to gaze") is the practice of staring at some external object. This fixed gazing is a method of meditation which involves concentrating on a single point such as a small object, black dot or candle flame.