(Noun) Any time during which Mr. Spock's infallible logic prevents humans from making poor choices with their inferior intellect.
(Verb) To perform the act described above, which you can only do if you are Mr. Spock, and you are not.
(Adjective, ending in -ed) To be on the receiving end of a Spock block. In many space cultures of the future this is considered the greatest honor a man can receive.
When Captain Kirk tries to regain control of the Enterprise in part 1 of "The Menagerie", he is Spock blocked by the Vulcan's clever hacking skills and cannot override the ship's computer.