Definition of "greenhouse" in English

noun

1. A building used to grow plants, particularly one with large glass windows or plastic sheeting to trap heat from sunlight even in intemperate seasons or climates.

2. (UK military slang, dated) The glass of a plane's cockpit.

3. (medicine) A structure that shields the operating table to protect against bacteria.

4. (climatology) A hot state in global climate.

verb

1. (transitive) To place (plants) in a greenhouse.

2. (transitive, figurative) To nurture in order to promote growth.