1.  red herring(n = noun.act) - any diversion intended to distract attention from the main issue;
is a kind of deflection, deflexion, deviation, digression, divagation, diversion

2.  red herring(n = noun.food) smoked herring - a dried and smoked herring having a reddish color;
is a kind of herring

3.  red herring(n = noun.communication) preliminary prospectus - a first draft of a prospectus; must be clearly marked to indicate that parts may be changed in the final prospectus; "because some portions of the cover page are printed in red ink a preliminary prospectus is sometimes called a red herring"
is a kind of course catalog, course catalogue, prospectus

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