IPA: //ˈɡlæsˌhaʊs//
KK: /ˈɡlæsˌhaʊs/
A building made mostly of glass, often used for growing plants or as a place for public events, where people can be easily seen.
The botanical garden features a beautiful glasshouse filled with exotic plants.
Glasshouse → The word is formed from "glass" (from Old English *glæs*, meaning a transparent material) and "house" (from Old English *hus*, meaning a dwelling or shelter). A glasshouse is a structure made primarily of glass, used for growing plants in a controlled environment.
Think of a 'transparent material' ('glass') that forms a 'shelter' ('house') — that's why a glasshouse is a building made of glass.