A primitive root; to stun, i.e. Stupefy (with sleep or death) -- (be fast a-, be in a deep, cast into a dead, that) sleep(-er, -eth).
H7290. radam
[רָדַם] verb Niph`al be in, or fall into, heavy sleep (Late Hebrew id.; compare Arabic stop up (door, gap, etc.), whence perhaps be deaf (stopped up) to sounds, etc.); — Perfect3masculine singular נִרְדַּם Judges 4:21; 1singular נִרְדַּמְתִּי Daniel 8:8; Imperfect3masculine singular וַיֵּרָדֵם Jonah 1:5; Participle נִרְדָּם Proverbs 10:5 3t.; — be or fall fast asleep: Judges 4:21; Jonah 1:5 (after וַיִּשְׁכַב), 1:6 (participle, Ges§ 120b DaSynt. § 70 (a)); participle as substantive בַּקָּצִיר נִרְדָּם Proverbs 10:5; of sleep of death Psalm 76:7; stunning effect of awe and dread Daniel 8:18; 10:9 (both + אָ֑רְצָה [וּפָנַי] עַלמָּֿנַי.