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Longman Dictionary of Contemporary English
bed-wetting
noun
EXAMPLES FROM CORPUS
▪ Starting with dirty diapers and bed-wetting, they raised us to adulthood.
▪ There was an article on bed-wetting, how parents need to reassure children.
▪ When that anxiety is discussed the cause of the bed-wetting is removed.
Douglas Harper's Etymology Dictionary
bed-wetting

1844, from bed (n.) + present participle of wet (v.). Related: Bed-wetter.

Wiktionary
bed-wetting

n. (alternative spelling of bedwetting English)

WordNet
bed-wetting

n. enuresis during sleep; especially common in children (who usually outgrow it)