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sleep attack
sleep at·tack (plural sleep at·tacks)


noun 
Definition:
 
sudden sleepiness: a side effect, similar to narcolepsy, of some drugs used in the treatment of Parkinsonism, marked by sudden irresistible sleepiness
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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