Definition of couplings:
(n) :
The act of joining together to form a couple.
(n) :
A device that couples two things together.
(n) :
(sexuality) An act of sexual intercourse.
(n) :
(software engineering) The degree of reliance between two or more software modules.
(n) :
(electronics) A connection between two electronic circuits such that a signal can pass between them.
(n) :
(physics) The property of physical systems that they are interacting with each other