hypnagogue
hyp·na·go·gue
noun
1.
an agent that induces drowsiness or sleep
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WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
hyp·na·go·gue
an agent that induces drowsiness or sleep
WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.