upright in position or posture; "an erect stature"; "erect flower stalks"; "for a dog, an erect tail indicates aggression"; "a column still vertical amid the ruins"; "he sat bolt upright"
a raised horizontal surface; "the speaker mounted the platform"
any military structure or vehicle bearing weapons
the combination of a particular computer and a particular operating system
a document stating the aims and principles of a political party; "their candidate simply ignored the party platform"; "they won the election even though they offered no positive program"