Definition of ostrich
1 a
: a swift-footed 2-toed flightless ratite bird (Struthio camelus) of Africa that is the largest of existing birds and often weighs 300 pounds (140 kilograms)
b
: rhea
c
: leather made from ostrich skin
2
[from the belief that the ostrich when pursued hides its head in the sand and believes itself to be unseen]
: one who attempts to avoid danger or difficulty by refusing to face it 
