What is a basic aikido move?

Kotegeish. From a punch, you tencan out of the way, and grab the uke's wristwith the hand closer to it. Tencan once again leading the uke down and back up again. Slide your hand down to his/her's so that your thumb is in between the knuckles of the attacker's ring finger and pinky and the rest of your fingers wrap around. Twist his wrist/hand down and out away from his body causing him to fail due to the pain this creates.