S: (n) feria (a weekday on which no festival or holiday is celebrated) "in the middle ages feria was used with a prefixed ordinal number to designate the day of the week, so `secunda feria' meant Monday, but Sunday and Saturday were always called by their names, Dominicus and Sabbatum, and so feria came to mean an ordinary weekday"
S: (n) Monday, Mon (the second day of the week; the first working day)
S: (n) Tuesday, Tues (the third day of the week; the second working day)
S: (n) Wednesday, Midweek, Wed (the fourth day of the week; the third working day)
S: (n) Thursday, Th (the fifth day of the week; the fourth working day)
S: (n) Friday, Fri (the sixth day of the week; the fifth working day)
S: (n) Saturday, Sabbatum, Sat (the seventh and last day of the week; observed as the Sabbath by Jews and some Christians)