sleeping capsule

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Noun1.sleeping capsule - a soporific drug in the form of a pill (or tablet or capsule)
lozenge, pill, tablet, tab - a dose of medicine in the form of a small pellet
hypnotic, soporific - a drug that induces sleep
References in periodicals archive ?
The final, fatal dose of poison was administered to Beryl via a doctored sleeping capsule which a doctor left for her the night before she died.
The hotel will host a number of installations and events during LDF including the clever sleeping capsule installation by French designer Mathieu Lehanneur, Once Upon A Dream, presented for the first time at this yearOs Salone del Mobile.
Only 20 per cent thought about sex, according to the survey by the makers of a new sleeping capsule.