铁锁 meaning in English

carabiner with safety ringp
carabinerwithsafetyring
carabmerp
darabiner
iron lock
karabiner

At sundown the massive double wooden gates of the ghetto were closed and locked with a large iron key .
在太阳落山时，贫民区的笨重的两扇大木门便被关上，锁上一把大铁锁。
Study actuality and prospect on tuniclike psammosilene root of southwestern national herbs
西南民族药金铁锁的研究现状及展望
Study on the anti - inflammatory effects and possible mechanism of total saponins of psammosilene tunicoids
金铁锁总皂苷抗炎镇痛作用及作用机理研究