Agent Orange
noun /ˌeɪdʒənt ˈɒrɪndʒ/
/ˌeɪdʒənt ˈɔːrɪndʒ/
[uncountable]- a poisonous chemical used by US soldiers during the Vietnam War to remove the leaves from forests so that they could see the enemy. It caused birth defects in many Vietnamese children, and after the war about 60 000 former US soldiers complained of illnesses.