Trap-car
noun
1.
a railroad car used at a terminal for collecting and distributing freight.
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- Trapdoor
noun 1. a door flush with the surface of a floor, ceiling, or roof. 2. the opening that it covers. adjective 3. of, relating to, or like a trapdoor.
- Trapdoor-function
noun, Mathematics. 1. a function defined from data by means of a mathematical procedure in such a way that it is easy to obtain the function when the data are known, but when the procedure and data are not known it becomes very difficult to determine the original data: used in cryptography, where the data […]
- Trap-door function
noun, Mathematics. 1. a function defined from data by means of a mathematical procedure in such a way that it is easy to obtain the function when the data are known, but when the procedure and data are not known it becomes very difficult to determine the original data: used in cryptography, where the data […]
- Trap-door spider
noun 1. any of several burrowing spiders, of the family Ctenizidae, that construct a tubular nest with a hinged lid. trap-door spider noun 1. any of various spiders of the family Ctenizidae that construct a silk-lined hole in the ground closed by a hinged door of earth and silk