tight as a drum
One who is not a donor.
A subset of English with restricted syntax and semantics described by a small set of formal rules, suitable for knowledge representation and specification or as a query language.
(zoology) The ramus of the lower jaw of a bird as far as it is naked.
(simile) Completely tight. / Wholly free from leaks, cracks, etc.
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DiQt（ディクト）
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