One-Handed Shuffle is a technique of shuffling cards using a faro-style interlace performed with a single hand. The ring finger or little finger is often used to stabilize the packets in the meeting corners.
Running Scissor Cut, also known as a One-Handed Overhand Shuffle, is a continuation of the Scissor Cut that systematically strips off smaller packets from the main bottom packet. References Dan & Dave discussing this move (5:06-7:54) https://www.youtube.com/watch?v=6m0mjWI7m1Y