From nachash; a snake (from its hiss) -- serpent.
see HEBREW nachash
H5175. nachash
I. נָחָשׁ noun masculineGenesis 3:1 serpent (Late Hebrew id.; Arabic serpent, viper (Lane406anything hunted) is compare by LagM, i, 230; BN 50, 188 BaEs 48, but improbable; Arabic see below [נָחַשׁ below; on formation compare LagBN 50); — absolute ׳נ Amos 5:19 +; construct נְחַשׁ Numbers 21:9 2t.; plural נְחָשִׁים 21:6; Jeremiah 8:17; —
1 serpent:
a. as biting, Amos 5:19; Ecclesiastes 10:8, in spite of charm (לַחַשׁ) 10:11 [compare Ecculs 12:13], Jeremiah 8:17 (+ צִפְעֹנִים; figurative of enemies); so הַשְׁרָפִים הַנְּחָשִׁים Numbers 21:6 (deadly; J E; compare JacobArab. Dicht. iv. 10 ff.), and singular 21:9, also (collective) 21:7 compare ׳נ שָׂרָף Deuteronomy 8:15 (+ עַקְרָב); ׳נ figurative of oppressor, מְעוֺפֵף שָׂרָף וּפִרְיוֺ צֶפַע יֵצֵא נָחָשׁ מִשֹּׁרֶשׁ Isaiah 14:29; figurative of Dan Genesis 49:17 (poem in J; "" שְׁפִיפֹן); נ ׳הֲמַת Psalm 58:5 (simile of perniciousness of ungodly), compare ׳נ 140:4; simile of effect of wine Proverbs 22:32 ("" צִפִעֹנִי).
b. rod becomes ׳נ Exodus 4:3 (J), compare 7:15 (E); נ דֶּרֶךְ צוּר ׳עֲלֵי Proverbs 30:19.
c. ׳נ (apparently) as hissing Jeremiah 46:22 (in simile, compare Gie); as eating dust Isaiah 65:25 compare Micah 7:17 (in simile; see also Genesis 3:14).
d. as crafty tempter Genesis 3:1-2, 4, 13, 14.
2 ׳נ (הַ)נְּחשֶׁת, bronze image of serpent Numbers 21:9 (twice in verse); 2 Kings 18:4 (compare נְחֻשְׁתָּן).
3 mythological ׳נ בָּרִחַ Job 26:13 fleeing serpent, of eclipse-dragon (compareלִנְיָתָן 3:6); also נ ׳לִוְיָתָן עֲקַלָּתוֺן נ ׳לִוְיָתָן ֗֗֗ בּרִחַ Isaiah 27:1 (symbolic of world-powers); ׳נ of sea-monster Amos 9:3. — ׳נ with verb נָשַׁךְ bite Numbers 21:6 8t. On supernatural character of serpents in Arabic belief see NöZeitschr. Für Völkerpsychol. i.(1860), 412-416 RSKinship 197, Semitic i. 421 f., 2d ed, 442 WeSkizzen iii.147, Arab. Heid. 2, 152 f. JacobArab. Dicht. iv. 5