means a piece of land planted with grapevines, grown for making wine (or sometimes just eating the grapes).

from A plain English compound: 'vine' plus 'yard.' 'Vine' came in through Old French 'vigne' from Latin 'vinea' (vineyard, vine), tied to 'vinum,' wine. 'Yard' is the homegrown Old English 'geard,' an enclosure or fenced ground — the same word that gives us a back yard and the courtyard. So the whole thing is half-borrowed, half-native: a Latin vine fenced inside a Saxon yard, a little linguistic marriage about as old as the practice itself.