dhāraṇī
Dhāraṇī is a synonym of mantra.

"Dhāraṇī is a Sanskrit word, interpreted to mean ‘unite and hold.’ Dhāraṇīs, sometimes called ‘mantras,’ unite all dharmas and hold limitless meanings. They are the chief, the head and the origin of all dharmas.” (DS 1)


Commentary

“A dhāraṇī also ‘unites and holds the three karmas’ of body, mouth and mind, so that there is no violation.” (DS 73)


Chinese Terms

陀羅尼