Meaning of dùn:
dùn
盾
Noun
shield; (currency) Vietnamese dong; currency unit of several countries (Indonesian rupiah, Dutch gulden etc)
Qíshì de dùn fēicháng jiāngù.
骑士的盾非常坚固。
The knight's shield is very strong.
Wǒ zài Yuènán yòng guò Yuènán dùn.
我在越南用过越南盾。
I used Vietnamese dong in Vietnam.
Zhège guójiā de huòbì dānwèi shì dùn.
这个国家的货币单位是盾。
The currency unit of this country is the shield.