module

noun10

1. •
   A self-contained component of a system, often interchangeable, which has a well-defined interface to the other components.
2. •
   A section of a program; a subroutine or group of subroutines.

   • Class modules are similar to form modules except they do not have a visible interface (GUI). — 2001
3. •
   A unit of education covering a single topic.

   • Which modules are you studying next year?
4. •
   An independent self-contained unit of a spacecraft.
5. •
   A standard unit of measure used for determining the proportions of a building.
6. •
   A pre-prepared adventure scenario with related materials for a role-playing game.

   • Dragonborn […] first appeared in the Dragons of Despair module (1984) for Advanced Dungeons & Dragons as “dragonmen.” — 2011
7. •
   An abelian group equipped with the operation of multiplication by an element of a ring (or another of certain algebraic objects), representing a generalisation of the concept of vector space with scalar multiplication.

   • Approximately forty-five years ago K. Morita presented the first major results on equivalences and dualities between categories of modules over a pair of rings. — 2004
8. •
   A file containing a music sequence that can be played in a tracker.

   • I composed a number of techno and rave modules back in the 1990s.
9. •
   A fractal element.
10. •
    A contrivance for regulating the supply of water from an irrigation channel.