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Meaning of sleep machine | Babel Free

Noun CEFR B2

Definitions

A portable speaker placed near one's bed or under a pillow, intended to play sleep-inducing white noise or other repetitive sounds to help the user sleep; occasionally other functions such as aromatherapy are included.

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.

See also

sleep mask sleep mode sleep nappy sleep of the just sleep off sleep over

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