Conservatory

Part of speech: noun (n.)

1. That which preserves from injury. [Obs.] "A conservatory of life." Jer. Taylor.

2. A place for preserving anything from loss, decay, waste, or injury; particulary, a greenhouse for preserving exotic or tender plants.

3. A public place of instruction, designed to preserve and perfect the knowledge of some branch of science or art, esp. music.

Part of speech: adjective (a.)

Having the quality of preserving from loss, decay, or injury.