What is "relapses"

Usage examples of "relapses".

As he gazes on the scene, and listens to the notes of the birds, he gradually relapses into one of those tender and undefinable reveries, which fill the youthful bosom in this delicious season.

With her departs the amorous illusion that had shed a temporary charm over the scene of his captivity, and he relapses into loneliness, now rendered tenfold more intolerable by this passing beam of unattainable beauty.