Webster's Revised Unabridged Dictionary · 1913

re-arm

re-arm , transitive verb

To arm (a person, group, or country) again; as, After the war, the defeated country was not rearmed by the victors. Usually used without the hyphen.

Also: rearm

re-arm , intransitive verb

To become armed again; as, after the war, the defeated country rapidly rearmed. Usually used without the hyphen.

Also: rearm