What is the meaning of Hothouse?

A heated greenhouse.

An environment in which growth or development is encouraged naturally or artificially; a hotbed.

An environment full of conflict or plots.

A bagnio, or bathing house; a brothel.

A heated room for drying greenware.

A hot state in global climate.

To provide (a child) with an enriched environment with the aim of stimulating academic development.

Source: wiktionary.org