nodowa
A thrust at the opponent's throat.
An item of Japanese armor protecting the throat: a gorget.
Attempting such a strike against a samurai would have been disastrous since they wore a gorget (nodowa) attached to their helmet or had armor covering the chin to the throat area in order to protect from that very kind of attack.
Where it comes from
From Japanese 喉輪 (literally “throat ring”).
Adapted from the Wiktionary entry nodowa (CC BY-SA 4.0).