閉栓へいせん Noun Irregular English jmdict 1 noun (common) (futsuumeishi) noun or participle which takes the aux. verb suru stopping;corking;capping;closing Antonym: 開栓 (かいせん) 2 noun (common) (futsuumeishi) noun or participle which takes the aux. verb suru disconnecting (e.g. gas supply) Antonym: 開栓 (かいせん)