English Verb hole up, holing up, holed up
#: The guerrillas holed up in a small cave.
Quotations 2005: The battle ended a two-day siege of an apartment block, where the suspects were holed up. — BBC news, Thursday, 27 January, 2005, 18:50 GMT (http://news.bbc.co.uk/1/hi/world/europe/4211625.stm)