ám hiệu
Meaning
1 senses
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A private sign agreed upon to exchange information secretly between people.
vi Họ dùng ám hiệu để liên lạc với nhau.
en They used a secret signal to communicate with each other.
Parts
ám / hiệu / Sino-Vietnamese; the character is 暗號 …
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OriginSino-Vietnamese; the character is 暗號