means Describing something made of, resembling, or covered in wood, or a place thick with trees; also used for a deep, resonant, earthy quality (as in a scent or a wine).

from A plain English formation: 'wood' plus the adjective-making suffix '-y,' the same pattern that gives us 'leafy' and 'rocky.' 'Wood' itself is ancient, descending from Old English 'wudu' and rooted in the Germanic word for forest or timber — a cousin of words across the old Northern tongues. So 'woody' has always simply meant 'of the wood,' whether that wood is a tree, a plank, or a forest you can get lost in.