航空信
Traditional form:
航空信
Pinyin (reading):
hángkōngxìn
Definitions:
- airmail letter
Characters:
- 航 - vessel, craft; to sail, to navigate
- 空 - hollow, empty, deserted, bare
- 信 - to trust, to believe; letter, sign
Traditional characters:
航空信
hángkōngxìn