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laugh
laugh down
laugh lines
laugh off
laugh track
laughable
laughing gas
laughing gull
laughing jackass
laughing thrush
laughingly
laughingstock
laughter
launce
Launceston
launch (1)
launch (2)
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launch window
launch win·dow (plural launch win·dows)


noun 
Definition:
 
limited period for launching something: the restricted period during which a rocket or other projectile can be successfully launched
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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