This is the 3593rd most frequent Russian word.
сном
The Russian word "сном" means "with sleep" or "by sleep" (instrumental case of "сон" - sleep).
сном is part of the noun 'сон', meaning 'dream'. Here it represents the thing seen while sleeping.
Этой ночью мне приснился странный сон.
Last night I had a strange dream.
сном refers to 'сон', indicating the state or process of sleeping.
Сон помогает нашему организму восстановиться.
Sleep helps our body recover.
сном describes an imagined scenario or illusion often associated with dreams.