noun

• (ornithology) A large flightless bird of the genus Struthio.
• The most widespread species of the genus, known as the common ostrich (Struthio camelus).
• (obsolete) The rhea.
• (figuratively) One who buries their head in the sand instead of acknowledging problems.
• (golf) The hypothetical completion of a hole five strokes under par (a quintuple birdie, quadruple eagle, triple albatross, or double condor).