Source : Webster's Revised Unabridged Dictionary (1913)

Cerevis \Cer"e*vis\ (s[e^]r"[-e]*v[i^]s; G.
   ts[e^]r`[~e]*v[=e]s"), n. [G., fr. L. cerevisia, cervisia,
   beer.]
   A small visorless cap, worn by members of German student
   corps. It is made in the corps colors, and usually bears the
   insignia of the corps.