Former student (7)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">former student</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for alumnus that I've seen before include "US college old boy" , "Ex-pupil" , "Past pupil" , "Former school pupil" , "School or college graduate" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">former student</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for alum that I've seen before include "Sulphate; maul (anag.)" , "Compound used in dyeing and to stop bleeding" , "Aluminium/potassium sulphate" , "Name given to a specific chemical compound and a class of them" , "Potassium compound; IoW sandy bay" .)