In the common vernacular, it means two or three or possibly more. From Merriam-Webster dictionary:
noun
two of the same sort considered together; pair.
two persons considered as joined together, as a married or engaged pair, lovers, or dance partners:
They make a handsome couple.
any two persons considered together.
Mechanics. a pair of equal, parallel forces acting in opposite directions and tending to produce rotation.
Also called couple-close. Carpentry. a pair of rafters connected by a tie beam or collar beam.
a leash for holding two hounds together.
Fox Hunting. two hounds:
25 hounds or 12˝ couple.
Lets put this off until next Sunday!