noun, noun or participle which takes 'suru', intransitive verb
lodging together; staying at the same inn
Refers to the act of staying at the same lodging or inn as someone else. Can be used as a noun or as a suru-verb.
旅先で偶然、友人と同宿した。
I happened to stay at the same inn as a friend during my trip.
同宿の人と親しくなった。
I became friends with the person I was lodging with.