A surrein'd jaded wit, but he rubs on."
'Surrein'd' may mean overriden. In Massinger we have,
"Let passion work, or, like a hot-rein'd horse,
'Twill quickly tire itself."
Unnat. Comb. iv. 2.
Shakespeare may, however, have written surbeat, or some other word.
"Poor may we call them in their native lords."
Sense and metre seem to require may.