Breathing power exercise and throw, usually from suwari-waza responding to the ryote-dori attack.
The partners are facing each other (squared "no hanmi" position). The goal is to redirect and throw uke sideways.
The tachi-waza technique sokumen-irimi-nage (or kokyu-nage-naname) is sometimes also referred to as kokyu-ho.
Search "Basic Forms" page for videos showing KOKYU-HO
Terms used:
Suwari-Waza, Ryote-Dori, Uke, Tachi-Waza, Kokyu-Nage-Naname, Hanmi