Kosa Uke
交差受け
Literally: crossed block
Also known as: Cross block, Kaisho kosa uke
A crossed-arm block in karate, documented in shotokan in the kata Heian Sandan; among blocks it is a two-armed one.
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Kosa uke (交差受け), literally crossed block, is, in shotokan terms, a crossed-arm block. Technique lists place it in the kata Heian Sandan. Among karate blocks it is a two-armed one, along with morote uke and manji uke. There is also an open-hand version, kaisho kosa uke. Exactly how the arms cross in kosa uke, and how it differs from juji uke, we have not been able to document clearly from the sources.