Dictionary entry

Sweven

Webster's Dictionary 1913

Swe″ven (?), n. [AS. swefen sleep, dream; akin to swebban, swefian, to put to sleep, to kill. √176. See Somnolent.] A vision seen in sleep; a dream. Wycliff (Acts ii. 17).

I defy both sweven and dream. Chaucer.