(1):
(a. & n.) Same as Due, or Duty.
(2):
(n.) Moisture from the atmosphere condensed by cool bodies upon their surfaces, particularly at night.
(3):
(n.) Figuratively, anything which falls lightly and in a refreshing manner.
(4):
(n.) An emblem of morning, or fresh vigor.
(5):
(v. t.) To wet with dew or as with dew; to bedew; to moisten; as with dew.