From an unused root meaning to be new; fresh, i.e. Unused or undried -- green, moist.
H3892. lach
לַח adjective moist, fresh, new; — ׳ל Genesis 30:37; Ezekiel 21:3; לָ֑ח17:24; plural לַחִים Numbers 6:3 2t.; —
1 moist, fresh, of trees, fruit, etc.; לַח לִבְנֶה Genesis 30:37 (J); ל ׳עֵץ Ezekiel 17:24; 21:3; grapes ל ׳עֲנָבִים Numbers 6:3.
2 new, of cords, ל ׳יְתָרִים Judges 16:7-8, probably made of fresh sinews of animal (compare Syriac PS1652; GFMon the passage)