A Simple

1. (pharmacology) A herbal preparation made from one plant, as opposed to something made from more than one plant.
2. (obsolete, by extension) A physician.
3. (logic) A simple or atomic proposition.
4. (obsolete) Something not mixed or compounded.
5. (weaving) A drawloom.
6. (weaving) Part of the apparatus for raising the heddles of a drawloom.
7. (Roman Catholicism) A feast which is not a double or a semidouble.