1. 软木瓶塞：bottle capping machine 封瓶机 | bottle cork 软木瓶塞 | bottle filler 装瓶机

2. 瓶塞：bottle coal == 气煤 | bottle cork == 瓶塞 | bottle cullet == 瓶罐碎玻璃

noun

1. the plug in the mouth of a bottle (especially a wine bottle)

Synonym: cork