Meanings

gas chamber

accounting room

locked-room murder (e.g. in murder mystery fiction)

staffroom

place where music lessons are given

customer service office

(radio or TV) studio

room for overnight guests

Imperial Household Finance Act

public relations department

design department

solarium

emergency room

access restriction (to an indoor location)

emergency room

computer class (esp. for learning the basics of using a computer)

horizontal stone chamber

atrioventricular septum

univentricular heart

interventricular septum