What is "do-jime"

is a chokehold in judo. It is one of the twelve constriction techniques of Kodokan Judo in the Shime-waza list. Do-Jime is one of the four forbidden techniques, Kinshi-waza. Do-jime is also a prohibited technique in Judo competitions, and is considered a 'slight infringement' according to IJF rules, Section 27: Prohibited acts and penalties, article 21