Yuka shibari 床縛り
Japanese for floor tying; yuka shibari is rope done on the floor rather than in suspension, close to the English floorwork and the Japanese newaza.
Yuka (床) means floor, and also the stage used by the narrator and shamisen player in traditional theater (Jisho). Shibari Study defines yuka shibari (床縛り) simply as tying on the floor. Andrea Ropes glosses yuka as floor or stage and points to yukawaza, floor technique, which it relates to newaza; Shibari Mallorca also lists yukawaza (床技). Rope365 uses newaza (寝技) for floorwork, tying on the floor or a bed that needs no overhead suspension point. The Shibaraku school uses yet another word, 床縄, for rope on the floor without suspension. Jisho notes that the same character can also be read toko, bed.