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| a gadget; dingus; thingumbob. |
| the offspring of a zebra and a donkey. |
| dead letter | |
| —n | |
| 1. | a letter that cannot be delivered or returned because it lacks adequate directions |
| 2. | a law or ordinance that is no longer enforced but has not been formally repealed |
| 3. | informal anything considered no longer worthy of consideration |
dead letter definition
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dead letter
An unclaimed or undelivered letter that is eventually destroyed or returned to the sender. For example, She moved without leaving a forwarding address, so her mail ended up in the dead letter office. [c. 1700]
A statute or directive that is still valid but in practice is not enforced. For example, The blue laws here are a dead letter; all the stores open on Sundays and holidays. [Second half of 1600s]