ostrich

1. (ornithology) A large flightless bird of the order Struthioniformes.

2. (ornithology) A large flightless bird of the order Struthioniformes.Examples: "Could a Taff'ta ſcarf, a long Eſtridge vvhing, / A ſtiffe Iron Doublet, and a Brazeel Pole / Tempt thee from Cambrick ſheets, fine active Thighs, / From Caudles vvhere the precious Amber ſvvims?"; "The Ostrich hath a compounded name in Greek and Latin—Struthio-Camelus, borrowed from a bird and a beast, as being a feathered and biped animal, yet in some ways like a camel; somewhat in the long neck; somewhat in the foot; and, as some imagine, from a camel-like position in the part of generation."; ""But is not this fortunate?" continued she, taking up a superb plume of white ostrich feathers, fastened by a small agraffe, enamelled so as to represent a bunch of violets; "this is just what you wanted for the velvet cap you are to wear at Madame de l'Hôpital's masked ball.""

3. (obsolete) The rhea.Examples: "The Lengua Indians of the Gran Chaco love to hunt the ostrich"obsolete

4. (figuratively) One who buries their head in the sand instead of acknowledging problems.figuratively

5. (golf) The hypothetical completion of a hole five strokes under par (a quintuple birdie, quadruple eagle, triple albatross, or double condor).