The Meaning of Tantra

What's the definition of the word tantra?

The Sanskrit word tantra means the warp of a loom or the strands of a braid. Like the strings of a warp, the tantra practices serve as a structure for intertwining the sutra themes to weave a tapestry of enlightenment. Moreover, tantra combines physical, verbal, and mental expressions of each practice, which braid together creating a holistic path of development. Because one cannot integrate and practice simultaneously all the sutra themes without previously training in each individually, tantra practice is extremely advanced.--The Art of Tantra