Webster’s Revised Unabridged Dictionary · 1913
Sweven
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. [Obs.] Wycliff (Acts ii. 17).
I defy both sweven and dream. Chaucer.