blue ice

Noun

 * 1) Ice that is blue in colour, formed by compressed snow on a glacier having its air bubbles squeezed out.
 * 2) * 2012, Glaciology of Blue Ice Areas in Antarctica, Climate Change Institute:
 * Typically, blue ice areas form where mountains obstruct ice flow and high winds transport a lot of snow.
 * 1)  Human waste that has leaked from an aircraft, frozen at high altitude, and fallen to earth.
 * 2) * 2002 November 21, Mark Belko, The sky is falling? Uh, not exactly, post-gazette.com:
 * Cadamore believes the mess came from an airplane. In the airline industry, it's euphemistically known as blue ice. Most people have far less judicious names for it. Such waste apparently is caused by leaks in airplane lavatories.
 * 1) * 2018 January 22, 'Airline poo' falls on India village causing confusion, BBC:
 * They are often called "blue ice", because of the chemicals added to the toilets in planes to reduce odour and break down the waste.
 * 1) * 2018 January 22, 'Airline poo' falls on India village causing confusion, BBC:
 * They are often called "blue ice", because of the chemicals added to the toilets in planes to reduce odour and break down the waste.
 * 1) * 2018 January 22, 'Airline poo' falls on India village causing confusion, BBC:
 * They are often called "blue ice", because of the chemicals added to the toilets in planes to reduce odour and break down the waste.