noun
Refers to an object used to close an opening, such as a bottle stopper, cork, or plug.
ワインの栓を抜く。
I pull the cork out of the wine bottle.
浴槽の栓を閉めてお湯をためる。
I close the bathtub plug and fill it with hot water.
noun
Refers to a device for controlling the flow of liquid or gas, such as a water tap or gas stopcock.
水道の栓をひねって水を出す。
I turn the tap and let the water run.
ガスの元栓を閉めてください。
Please turn off the main gas valve.
The kanji 栓 is a phono-semantic compound: the wood radical 木 and the phonetic 全 (ぜん) suggesting 'complete' or 'all', together meaning a wooden stopper or plug. The reading せん is the Sino-Japanese on'yomi.