swelt, v. i. [OE. swelten to die, to swoon or faint, AS. sweltan to die; akin to OD. swelten to hunger, to fail, OS. sweltan to die, Icel. svelta to die, to hunger, Sw. svälta to hunger, Dan. sulte, Goth. sviltan to die. Cf. Swelter, Sweltry.].
To die; to perish. [1913 Webster]
To faint; to swoon. Chaucer. [1913 Webster]
"Night she swelt for passing joy."
swelt, v. t.
To overpower, as with heat; to cause to faint; to swelter. Bp. Hall. [1913 Webster]