Ude-hishigi-hara-gatame
(stomach armlock)
"Tori with his left hand, palm placed on the outer surface
of uke's gi, seizes Uke's left wrist with his right hand, the
palm also flat on Uke's arm. Tori pulls Uke's wrist as far as
possible towards his left; and at the same time with his right
hand and forearm, presses on Uke's elbow and triceps. Uke's left
arm is blocked by Tori's abdomen.
Tori
keeps his upper body upright, and applies preasure to his right
forearm onUke's left triceps. At the same time Tori's left arm
pulls Uke's left wrist upwards, and maintaining contact with Uke's
arm his own abdomen at all times."