Definition of modules:
(n) :
A self-contained component of a system, often interchangeable, which has a well-defined interface to the other components.
(n) :
(programming) A section of a program; a subroutine or group of subroutines.
(n) :
A unit of education covering a single topic.
(n) :
(architecture) A standard unit of measure used for determining the proportions of a building.
(n) :
A pre-prepared adventure scenario with related materials for a role-playing game.
(n) :
(astronautics) An independent self-contained unit of a spacecraft.