じゅうはちきん 18禁 LinksSentence search for 18禁Sentence search for じゅうはちきんSentence search for 十八禁Kanji details for 禁Edit in JMdict Noun1. 18 certificate; R-18; restricted to those 18 years or olderOther forms十八禁 【じゅうはちきん】 Discussions Log in to talk about this word.