(CAMBRIDGE), A certificate from the apothecary that you are INDISPOSED, (i. e.) to go to chapel. He sports an Aegrotat, he is sick, and unable to attend Chapel. or Hall. It does not follow, however, but that he can STRUM A PIECE, or sport a pair of oars.
AEGROTAT
Meaning of AEGROTAT in English
Slang English vocab. Английский сленговый словарь. 2012