'It will save many lives': What did Varadkar mean by 'cocooning'?

Taoiseach Leo Varadkar during a visit to the UCD National Virus Reference Laboratory, University College Dublin, in Belfield, Dublin. PA Photo. Picture date: Wednesday March 18, 2020. Mr Varadkar has warned issues related to the outbreak of Covid-19 in Ireland could go on for a number of months. Photo: Aidan Crawley/PA Wire

When he mentioned it, many wondered what Leo Varadkar meant by “cocooning”.