os ‧ trich /ˈɒstrɪtʃ $ ˈɒː-, ˈɑː-/ BrE AmE noun [countable]
[ Date: 1200-1300 ; Language: Old French ; Origin: ostrusce , from Vulgar Latin avis struthio , from Latin avis 'bird' + Greek strouthos 'ostrich' ]
[ Sense 2: Origin: Because ostriches were believed to bury their heads in sand so that their hunters could not see them ]
1 . a large African bird with long legs, that runs very quickly but cannot fly
2 . informal someone who does not deal with difficult problems but tries to pretend that they do not exist