air letter
noun
1
: an airmail letter
2
: a sheet of airmail stationery that can be folded and sealed with the message inside and the address outside
Word History
First Known Use
1918, in the meaning defined at sense 1
| 单词 | air letter |
| 释义 | air letternoun1 : an airmail letter 2 : a sheet of airmail stationery that can be folded and sealed with the message inside and the address outside Word HistoryFirst Known Use 1918, in the meaning defined at sense 1 |
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