(a) a letterbox (now rare); (b) a place used for passing on letters, information, etc., in secret (cf. drop, n. 17d); (also) the act or practice of…
| 单词 | θ129851 |
| 释义 | the mind > attention and judgement > enquiry > investigation, inspection > secret observation, spying > [noun] > information exchange > use of (1) letter drop1971 (a) a letterbox (now rare); (b) a place used for passing on letters, information, etc., in secret (cf. drop, n. 17d); (also) the act or practice of… |
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