'Right-handed screw' definitions:

Definition of 'Right-handed screw'

From: GCIDE

Right-handed \Right"-hand`ed\, a.
1. Using the right hand habitually, or more easily than the left. [1913 Webster]
2. Having the same direction or course as the movement of the hands of a watch seen in front; -- said of the motion of a revolving object looked at from a given direction. [1913 Webster]
3. (Zool.) Having the whorls rising from left to right; dextral; -- said of spiral shells. See Illust. of Scalaria. [1913 Webster]
Right-handed screw, a screw, the threads of which, like those of a common wood screw, wind spirally in such a direction that the screw advances away from the observer when turned with a right-handed movement in a fixed nut. [1913 Webster]