Simple past tense and past participle of bunker.(verb)
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Use "bunkered" in a sentence
"A new report Transnational Trafficking and the Rule of Law in West Africa by the UN Office for Drugs and Crime estimates that 55 million barrels of oil are stolen ( 'bunkered') each year from the Niger delta."
"Everyone's just kind of bunkered down waiting for sunlight to appear."
"We kind of bunkered down in a small hotel there overnight, and there were a couple more hotels in that city as well."