Real Dictionary

multiple
a method, practice, or examination designed to test a person or thing [...]
an arrangement of two or more things in a successive order [...]
an uninterpreted calculus or system of symbolic logic [...]
arrangement in a straight line [...]
of, in, along, or relating to a line [...]
the act or process of comparing [...]
the adoption by an adult or adolescent of behaviour more appropriate to a child, esp as a defence mechanism to avoid anxiety [...]
the division of a physical or abstract whole into its constituent parts to examine or determine their relationship or value [...]
the piece of land where something was, is, or is intended to be located [...]
the process of making an identical copy of an organism or cell [...]
the product of a given number or polynomial and any other one [...]
You use multiple to describe things that consist of many parts, involve many people, or have many uses.
countable noun: If one number is a multiple of a smaller number, it can be exactly divided by that smaller number.