開栓 かいせん Meanings Noun, する verb unstopping; uncorking; uncapping; opening Antonym: 閉栓 (へいせん). connecting (e.g. gas supply) Antonym: 閉栓 (へいせん). Kanji 開 open. Read as カイ. 栓 stopper. Read as セン. Jinuma: Japanese Dictionary · Word lists