i Register
In some senses, erw is marked as historical. Watch for register when choosing this word.
erw
/ˈɛɹuː/
noun 3
Definitions
noun
1
A medieval Welsh unit of surface area equal to 11664 sq ft, or about ¼ acre.
noun
1
Initialism of enhanced-radiation weapon (“neutron bomb”).
2
Acronym of explosive remnant of war.
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