Cursor, ōris, m. [curro],
a surname of L. Papirius , Liv. 9, 16, 11; Ampel. 18; Aur. Vict. Vir. Ill. 31; Eutr. 2, 8.
cursor ōris, m 1 CEL-, a runner, racer, competitor : Ut cursor frena retentat equi, O.— A courier...
An Elementary Latin Dictionary
·noun Any part of a mathematical instrument that moves or slides backward and forward upon another p...
Webster's Dictionary of the English Language