Try a different dictionary, Beverly.  The Webster tradition is regular understood as the preferable dictionary for American usage. The Merriam Webster online meaning 2a is a perfect match for what Neko obviously meant.

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Definition of oblique

1  a :neither perpendicular nor parallel :inclined oblique lines
    b :having the axis not perpendicular to the base an oblique cone
    c :having no right angle an oblique triangle

2  a :not straightforward :indirect 
    In her speech she made only oblique references to the scandal.; 
also :obscure
       … much of what there is to see is nuanced and oblique — a shadow of a shadow of a shadow.—New Yorker

    b :devious, underhanded
        … the open, above-board fury of his mind coagulated, thickened, and sunk to a dull, evil hatred, a wicked, oblique malevolence. —Frank Norris

3 :situated at an angle and having one end not inserted on bone oblique muscles