generator

noun9

1. •
   A piece of apparatus, equipment, etc, to convert or change energy from one form to another.
2. •
   Especially, a machine that converts mechanical energy into electrical energy.
3. •
   something that makes or causes something else, especially a machine that changes the energy of movement into electricity
4. •
   An apparatus in which vapour or gas is formed from a liquid or solid by means of heat or chemical process, as a steam boiler, gas retort etc.
5. •
   A subordinate piece of code which, given some initial parameters, will generate multiple output values on request.

   • When you come across something that looks like a listcomp but is surrounded by parentheses, you're looking at a generator: […] — 2016
6. •
   the basic musical note that a chord is built on and named after, also called the root
7. •
   a musical interval that is repeated from each new note in turn to give the notes of a scale or system of tuning
8. •
   An element of a group that is used in the presentation of the group: one of the elements from which the others can be inferred with the given relators.
9. •
   one of the straight lines that together make up a surface such as a cone or cylinder