·noun A straight muscle; as, the recti of the eye.
rectus, a, um, Part. and P. a., from rego. ...
A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
rēctus adj.with comp.and sup.P. of rego, in a straight line, straight, upright, direct, undeviatin...
An Elementary Latin Dictionary