Sentence:  She wore glasses which, in humble reference to a divergent <WSD>obliquity</WSD> of vision, she called her straighteners, and a little ugly snuff-coloured dress trimmed with satin bands in the form of scallops and glazed with antiquity. 
Meaning of the word marked with <WSD> tags:  The quality of being oblique in direction, deviating from the horizontal or vertical; (or) the angle created by such a deviation. (from 15th c.)