a structure of four horizontally revolving arms pivoted atop a post and set in a gateway or opening in a fence to allow the controlled passage of people.
2.
a similar device set up in an entrance to bar passage until a charge is paid, to record the number of persons passing through, etc.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
a mechanical gate or barrier with metal arms that are turned to admit one person at a time, usually in one direction only
2.
any similar device that admits foot passengers but no large animals or vehicles
3.
logic Also called: gatepost a symbol of the form ̃⊢, ⊨, or ⊩, used to represent logical consequence when inserted between expressions to form a sequent, or when prefixed to a single expression to indicate its status as a theorem