はず押し

From 筈(はず) (hazu, “notch”) + 押(お)し (oshi), the 連(れん)用(よう)形(けい) (ren'yōkei, “stem or continuative form”) of the verb 押(お)す (osu, “push”).

• IPA^(key): [ha̠zɨᵝo̞ɕi]

はず押(お)し • (hazuoshi) 

1. (sumo) a pushing technique in which an athlete’s hands push against the opponent’s armpits or upper body

So-called for the shape of the hands, with the thumb extended and the other fingers clenched, forming a notch.

• 相撲(すもう) (sumō, “sumo”)
• 突(つ)っ張(ぱ)り (tsuppari, “thrusting attack; slap”)