  In this paper, we investigate a curve whose spherical image the tangent
indicatrix and binormal indicatrix is slant helix and called it as a slant
helix. We obtain that the spherical images are spherical slant helices defined
by [3]. This notation is a generalization of a slant helix. Furthermore, we
have given some characterizations for the slant helix and we show that a curve
of constant precession is a slant helix.
