Spatial flexure

From Memory Alpha, the free Star Trek reference.

A spatial flexure is a tunnel through space, and a type of spatial rift.

According to Q, Junior, he "once learned how to open a spatial flexure using nothing more than a deflector array." With it he could manipulate where exactly he wished to go. In 2377, he opened one with the Delta Flyer II to the Clevari system, and later to the Zozek system before returning to USS Voyager. (VOY: "Q2")