Definition of swoons:
(v) :
(literally) To faint, to lose consciousness.
(v) :
(by extension) To be overwhelmed by emotion, especially infatuation.
(v) :
(transitive) To overwhelm with emotion, especially infatuation.
(n) :
An infatuation.
(n) :
A faint.
(v) :
To make a moan, sigh, or some other sound expressing infatuation or affection.