From radam; a lethargy or (by implication) trance -- deep sleep.
see HEBREW radam
H8639. tardemah
תַּרְדֵּמָה noun feminine deep sleep; — absolute ׳ת Genesis 2:21 +; construct תַּרְדֵּמַת 1 Samuel 26:12; — deep sleep, usually with נָפַל + עַל person, and usually by supernatural agency: י ׳וַיַמֵּל ׳א ׳ת עַל Genesis 2:21 (J; ᵐ5 ἔκστασις), ׳ת עַל נָָֽפְלָח 15:12 (J; ᵐ5 id.), Job 4:13 = 33:15 (ᵐ5 [δεινὸς], φόβος), so י ׳תַּרְדֵּמַת 1 Samuel 26:12 (ᵐ5 θάμβος, result of slothfulness (על and person omitted) Proverbs 19:15; figurative for insensibility of spirit, י עֲלֵיכֶם ׳נָסַךְ ת ׳רוּחַ Isaiah 29:10.