(a.) Straight; consisting of a straight line or lines; bounded by straight lines; as, a rectineal angle; a rectilinear figure or course.

arrowlike dead straight direct even flat horizontal in a line level lineal linear rectilineal right ruler-straight smooth straight straight-cut straight-front straight-side streamlined TRUE unbending unbent unbowed unbroken uncurved undeflected undeviating undistorted uninterrupted unswerving unturned upright vertical