ostrich

noun5

1. •
   A large flightless bird of the order Struthioniformes.
2. •
   The most widespread species of that order, known as the common ostrich (Struthio camelus).

   • 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? — 1634
3. •
   (figurative) One who buries their head in the sand instead of acknowledging problems.
4. •
   The hypothetical completion of a hole five strokes under par (a quintuple birdie, quadruple eagle, triple albatross, or double condor).
5. •
   (no longer used) The rhea.