turnstile
- Noun. A rotating mechanical device that controls and counts passage between public areas, especially one that only allows passage after a charge has been made.
- Noun. (mathematics, logic) The symbol used to represent (w, logical entailment) (deducibility relation).
This is an unmodified, but possibly outdated, definition from Wiktionary and used here under the Creative Commons license. Wiktionary is a great resource. If you like it too, please donate to Wikimedia.
This entry was last updated on RefTopia from its source on 3/20/2012.