course
/kɔːs/
A sequence of events.
The normal course of events seems to be just one damned thing after another.
A path that something or someone moves along.
His illness ran its course.
The lowest square sail in a fully rigged mast, often named according to the mast.
Main course and mainsail are the same thing in a sailing ship.
(in the plural, courses) Menses.
A row or file of objects.
One or more strings on some musical instruments (such as the guitar, lute or vihuela): if multiple, then closely spaced, tuned in unison or octaves and intended to played together.