From an unused root meaning to bend; a vine (as twining), especially the grape -- vine, tree.
H1612. gephen
גֶּ֫פֶן noun feminineJudges 9:13 + (masculine only Hosea 10:1, perhaps influence of יִשְׂרָאֵל 2 Kings 4:39) vine (Late Hebrew id., Arabic (Yemen), Assyrian gapnu, compare ZehnpfBAS i. 633; Aramaic גֶּפֶן גּוֺפַן,, , plural ) — ׳ג Genesis 40:9 38t. (also construct, as Numbers 6:4; Deuteronomy 32:32; Isaiah 16:8-9,), גָּ֑פֶן Judges 9:12 2t.; suffix גַּפְנִי Joel 1:7, גַּפְנְךָ Jeremiah 5:17, גַּפְנוֺ 1 Kings 5:5 3t., גַּפְנָהּ Hosea 2:14, גַּפְנָם Deuteronomy 32:32 2t.; plural גְּפָנִים Song of Solomon 2:13; Habakkuk 3:17 — vine (always grape-bearing except 2 Kings 4:39) Genesis 40:9-10, (in dream) 49:11; Numbers 20:5; Deuteronomy 8:8; Judges 9:12-13, (in allegory) 1 Kings 5:5; 2 Kings 18:31 = Isaiah 36:16; Psalm 78:47; 105:33; Song of Solomon 2:13; 6:11; 7:13; Isaiah 7:23; 24:7; 32:12; Jeremiah 5:17; 8:13; Hosea 2:14; Joel 1:7, 12; 2:22; Micah 4:4; Habakkuk 3:17; Haggai 2:19; Zechariah 2:10; 8:12; Malachi 3:11; שָׂדֶה גֶּפֶן a vine bearing poisonous gourds 2 Kings 4:39; הַיַּיִן גֶּפֶן Numbers 6:4 (compare Genesis 40:10; Judges 9:13) 13:14; הַגֶּפֶן אֶשְׁכְּלוֺת Song of Solomon 8:9; הַגֶּפֶן עֵץ Ezekiel 15:2, 6; in simile of stars fading away at Yahweh's judgment Isaiah 34:4; in simile of wicked losing early promise Job 15:33; in simile of wife Psalm 128:3; figurative of Israel 80:9; 80:15; Ezekiel 17:6 (twice in verse); 17:7-8, Hosea 10:1 compare Ezekiel 19:10; Jeremiah 2:21; 6:9; also Hosea 14:8; figurative of Israel as easily destroyed Ezekiel 15:2, 6; figurative of godless enemies of Israel Deuteronomy 32:32 compare Di; שִׂבְמָה גֶּפֶן figurative for prosperity of Moab Isaiah 16:8-9, Jeremiah 48:32. — On the vine in Syria compare AnderlindZPV 1888, 160 ff.
גפף (√ of following; compare Syriac in derivatives, curved, convex; also Arabic both hilly country and depression, Frey.)