Wiktionary
t perm
n. (context Rubik's Cube English) A PLL case (i.e. a case where the cubies of the last layer all have the last-side colour facing the last side) where a pair of opposite edge cubies and a pair of corner cubies that lie on either side of one of the wrong edges both need to be swapped.
Usage examples of "t perm".
They won't perm' us to deliver the poison vessel until we have brought Tuuzhan'tar into balance.