"moistening" in the noun sense
1. moistening, dampening
the act of making something slightly wet
"moistening" in the verb sense
1. moisten, wash, dampen
make moist
"The dew moistened the meadows"
2. drizzle, moisten
moisten with fine drops
"drizzle the meat with melted butter"
Source: WordNet® (An amazing lexical database of English)
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