dew -
moisture in the air that settles on plants, etc in the morning, resulting in drops.
dew -
An instance of a such moisture settling on plants, etc.
Verb
dew -
To wet with, or as if with, dew; to moisten.
Wikipedia
Dew is water in the form of droplets that appears on thin, exposed objects in the morning or evening. As the exposed surface cools by radiating its heat, atmospheric moisture condenses at a rate greater than that at which it can evaporate, resulting in the formation of water droplets. When temperatures are low enough, dew takes the form of ice; this form is called frost.
OmegaWiki Dictionary
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dew Atmospheric moisture that condenses after a warm day and appears during the night on cool surfaces as small drops.