King James Bible
King James Version (KJV)

Or tanniym (Ezek. 29:3) {tan-neem'}; intensive from the same as tan; a marine or land monster, i.e. Sea-serpent or jackal -- dragon, sea-monster, serpent, whale.
see HEBREW tan
H8577. tannin
תַּנִּין (erroneous תַּנִּים) noun masculineEzekiel 29:3 serpent, dragon, sea-monster (Late Hebrew id. (rare); Arabic , loan-word from Aramaic תַּנִּינָא, Frä123; Ethiopic ); — absolute ׳ת Exodus 7:9 +, יִ֯ם Ezekiel 29:3; 32:2 (by confusion with plural of [תַּן]); plural תַּנִּינַם Genesis 1:21, etc.; —
1 serpent, Deuteronomy 32:33 (venomous), Psalm 91:13 ("" מֶּתֶן), Exodus 7:9-10, 12 (P).
2 dragon, as devourer (simile) Jeremiah 51:34; הַתּ ׳עֵין Nehemiah 2:13, near Jerusalem
3 sea- (or river-) monster, Genesis 1:21 (P); figurative Job 7:12; Psalm 74:13 (i.e. Egyptains), Isaiah 27:1; 51:9 ("" רַהַב, mythological personification of chaos); in summons to praise ׳י Psalm 148:7 ("" תְּהֹמוֺת). — See CheEncy. Bib. DRAGON GunkSeh-pfung 69 ff. BartonJAOS xv. 1 (1891). 23 f.; personified of water-spout RSSemitic i. 161; 2nd ed. 176; compare Greek fish-name θύννος LewyFremdw. 15.
II. תנן (√ of following; apparently "" נתן; compare also I. תנה).