Noun

(en noun)

Any of various rotary machines that use the kinetic energy of a continuous stream of fluid (a liquid or a gas) to turn a shaft.

* {{quote-magazine, year=2013, month=July-August, author= Lee S. Langston, magazine=(American Scientist)

, title= The Adaptable Gas Turbine , passage=Turbines' have been around for a long time—windmills and water wheels are early examples. The name comes from the Latin ''turbo'', meaning vortex, and thus the defining property of a ' turbine is that a fluid or gas turns the blades of a rotor, which is attached to a shaft that can perform useful work.}}

Noun

(-)

Work that is done at home, especially school exercises set by a teacher.

*{{quote-magazine, date=2013-07-19, author=(Peter Wilby)

, volume=189, issue=6, page=30, magazine=(The Guardian Weekly) , title= Finland spreads word on schools , passage=Imagine a country where children do nothing but play until they start compulsory schooling at age seven. Then, without exception, they attend comprehensives until the age of 16.

Preliminary or preparatory work, such as research.