Definition of swells:
(v) :
(intransitive) To become bigger, especially due to being engorged.
(v) :
(transitive) To cause to become bigger.
(v) :
(intransitive) To grow gradually in force or loudness.
(v) :
(transitive) To cause to grow gradually in force or loudness.
(v) :
(transitive) To raise to arrogance; to puff up; to inflate.
(v) :
(intransitive) To be raised to arrogance.