economy

1. economy (noun) — sense 1

Definition: Effective management of a community or system, or especially its resources.: The regular operation of nature in the generation, nutrition and preservation of animals or plants.

Example: animal economy, vegetable economy

2. economy (noun) — sense 2

Definition: Effective management of a community or system, or especially its resources.: System of management; general regulation and disposition of the affairs of a state or nation, or of any department of government.

3. economy (noun) — sense 3

Definition: Effective management of a community or system, or especially its resources.: A system of rules, regulations, rites and ceremonies.

Example: the Jewish economy

4. economy (adj) — sense 4

Definition: Cheap to run; using minimal resources; representing good value for money; economical.

Example: He bought an economy car.

5. economy (adv) — sense 5

Definition: In or via the part of a commercial passenger airplane reserved for those paying the lower standard fares.

Example: Numerous web sites have tips on how to fly economy.