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English to English adjective
| 1 |
So tight as to retain, or not to admit, water; not leaky. |  | source: webster1913 adjective satellite
| 2 |
not allowing water to pass in or out | | source: wordnet30
| 3 |
without flaws or loopholes | | Example: an ironclad contract
a watertight alibi
a bulletproof argument
source: wordnet30
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