From an unused root meaning to be yellow; a wolf -- wolf.
H2061. zeeb
I. זְאֵב noun masculineIsaiah 11:6 wolf (Late Hebrew id., Arabic (jackal according to HomNS 303 ff.; but see RSZMG 1880, 373 and DoughtyArab. Deseria i. 327; ii. 144, 145) Aramaic דֵּיבָה, Assyrian zîbu DlS 47; Ethiopic hyena Di1056 (on formation compare LagBN 58); Phoenician in compound proper name זיבקם) — זְאֵב absolute Genesis 49:27 2t.; construct Jeremiah 5:6; plural זְאֵבִים Ezekiel 22:27; construct זְאֵבֵי Habakkuk 1:8; Zephaniah 3:3; — wolf, never in narrative; in predictions of peace in Messian. age כֶּבֶשׂ עִם זְאֵב וְגָר Isaiah 11:6 כְּאֶחָד יִרְעוּ וְטָלֶה זְאֵב 65:25; in simile, of Benjamin's fierceness ׳ב יִטְרָ֑ף זְאֵב Genesis 49:27; of fierce horses of Chaldeans עֶרֶב מִזְּאֵבֵי חַדּוּ Habakkuk 1:8 ("" מִנְּמֵרִים קַלּוּ); of princes of Judah טָ֑רֶף טֹרְפֵי כִּזְאֵבִים Ezekiel 22:27; metaphor of enemies of Judah Jeremiah 5:6 עֲרָבוֺת זְאֵב ("" נָמֵר אַרְיֵה,); of corrupt and oppressive judges עֶרֶב זְאֵבֵי שֹׁפְטֶיהָ Zephaniah 3:3 ("" שֹׁאֲגִים אֲרָיוֺת).