ultimo adjective.
['ʌltɪmǝʊ] L16.[Latin (sc. die or mense) abl. sing. masc. of ultimus last, final.]1. Designating the last day (of a specified month).
L16-L17.2. Of last month. Freq. written
ULT,
ULTO.
E17.■ G. Washington I was very glad to receive your letter of the 31st ultimo. [TahlilGaran] English Dictionary ▲