strong one-handed push
Sumo technique: a powerful thrust using only one hand, often to the opponent's chest or face.
The yokozuna pushed his opponent out of the ring with a strong one-handed thrust.
Compound of 片 (kata, 'one side') and 鉄炮 (teppō, 'gun'), literally 'one-sided gun', referring to the forceful, single-handed thrust resembling a gunshot.