letter drop
US
noun
1A letterbox (now rare ).
2A place used for passing on letters, information, etc., in secret.
Origin
Late 19th century; earliest use found in Boston Daily Advertiser.
| 单词 | letter drop |
| 释义 | letter dropUS noun 1A letterbox (now rare ). 2A place used for passing on letters, information, etc., in secret. Origin |
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