—conservatory /kənˈsɜː.və.tər.i/ aep /-ˈsɝː.və.tɔː.ri/ noun [C] (UK ALSO conservatoire, /kənˈsɜː.və.twɑːr/
) (SCHOOL)
► F0 a school for the teaching of music or sometimes acting or artThesaurus+: ↑Types of schoolnoun [C] (US ALSO solarium) (ROOM)
► F0 a room with glass walls and a glass roof, usually connected to a house, used for growing plants or for relaxing inSee picture: conservatory 
Thesaurus+: ↑RoomsThesaurus+: ↑Garden buildings and structures
- be on the run
- be on the same wavelength
- be on the scene
- be on the side of the angels
- be on the stage
- be on the tip of your tongue
- be on the track of sb/sth
- be on the trail of sb/sth
- be on the way to sth
- be on to a good thing
- be on top of sth
- be on/walking the beat
- be on your best behaviour
- be on your deathbed
- be on your guard
- be on your honour
- be on your uppers
- be opposed to sth
- be out for/after sb's scalp
- be out for the count
- be out in left field
- be out of bounds
- be out of line with sth
- be out of puff
- be out of sorts