Last month: abbr.
I believe the answer is:
sept
(Other definitions for sept that I've seen before include "Irish family group" , "Month (abbreviation); clan subdivision (in Ireland)" , "Thirty days" , "Branch of Irish clan" , "Part of clan" .)
I believe the answer is:
sept
(Other definitions for sept that I've seen before include "Irish family group" , "Month (abbreviation); clan subdivision (in Ireland)" , "Thirty days" , "Branch of Irish clan" , "Part of clan" .)