WordNet sense 1 (a line or cut across a fabric that is not at right angles to a side of the fabric):

bias

WordNet sense 2 (a punctuation mark (/) used to separate related items of information):

slash, stroke, virgule, separatrix, solidus

WordNet sense 3 (slanting or inclined in direction or course or position--neither parallel nor perpendicular nor right-angled):

oblique

WordNet sense 4 (having an oblique or slanted direction):

aslant, aslope, slanted, slanting, sloped, sloping

WordNet sense 5 (at an angle to the horizontal or vertical position):

inclined