接せっ栓せん

noun

connector; plug

Refers to a physical connector or plug, often in electrical or mechanical contexts. The term is somewhat technical.

• この接せっ栓せんは規き格かくに合あわないので使つかえません。

  This connector doesn't meet the standard, so it can't be used.

• 機き械かいの背はい面めんに接せっ栓せんを差さし込こんでください。

  Please insert the plug into the back of the machine.