シス Common word LinksSentence search for シスEdit in JMdict Noun1. cisSee also シストランス異性Noun2. sisterSee also シスターWikipedia definition3. SithSith is a term applied to certain characters in the Star Wars universe capable of using the "dark side" of the Force. In the Star Wars films and much of the Expanded Universe they are the main antagonists.Read “Sith” on English WikipediaRead “シス” on Japanese WikipediaRead “Sith” on DBpedia Discussions Log in to talk about this word.