The word conservatory (kun-'sir-vuh-tore-ee, plural--conservatories) is derived from the Italian word conservatorio and the Latin form conservare. Its first known usage was in the 17th century. It is defined as a type of music school (or sometimes an art, theatrical or dance school) where the emphasis is on instruction and/or performance of such subjects as music history or music theory, musical composition, singing and musical instrumentation.
A sample sentence using the word:
John won a scholarship to the Santa Fe Conservatory of Music where he performed in the school orchestra and jazz band.
[In a different vein, the word can also be defined as a type of greenhouse used for the growing of plants.]