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general::
Phrase(s): bury one’s head in the sand [and] hide one’s head in the sand; have one’s head in the sand
Fig. to ignore or hide from obvious signs of danger. (Alludes to an ostrich, which is believed incorrectly to hide its head in a hole in the ground when it sees danger.) • Stop burying your head in the sand. Look at the statistics on smoking and cancer.
McGrawhill's American Idioms And Phrasal Verbs