What does corporal mean? (From Shakespeare's Macbeth)

Corporal means bodily, physical.

BANQUO: The earth hath bubbles, as the water has, / And these are of them. Whither are they vanish'd?

MACBETH: Into the air; and what seem'd corporal melted / As breath into the wind. Would they had stay'd!

From Shakespeare's Macbeth, Act I, Scene III