bed-wet

Etymology
Backformation from,. Ultimately from +.

Verb

 * 1)  To wet the bed: to experience bed-wetting or enuresis, to urinate while asleep.

Usage notes

 * Except in its gerund-participle form, this verb is quite rare.
 * The past tense and past participle form are ambiguous; both and  exist, but both are extremely rare.