depth charge

noun
an explosive device that is used against submarines and other underwater targets, and is usually set to detonate at a predetermined depth.
Also called depth bomb.


Origin:
1915–20

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Collins
World English Dictionary
depth charge or depth bomb
 
n
a bomb used to attack submarines that explodes at a pre-set depth of water
 
depth bomb or depth bomb
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences
The depth charge landed on the submarine deck with a loud, ominous sound.
So that if a depth charge operates in the area close enough to the submarine, it will damage the submarine.
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