n (obsolete) A slip of paper; a short note. (defdate|14th-17th c.)
n (legal) An annex or appendix to a statute or other regulatory instrument, or to a legal contract. (defdate|from 15th c.)
n A timetable, or other time-based plan of events; a plan of what is to occur, and at what time. (defdate|from 19th c.)
n (US) Each of the five divisions into which controlled drugs are classified, or the restrictions denoted by such classification. (defdate|from 20th c.)
n (computer science) An allocation or ordering of a set of tasks on one or several resources. (defdate|from 20th c.)