Places where dead bodies are buried; cemeteries; or places where old, unused things are abandoned.
From 'grave' (burial place, from Old English) + 'yard' (enclosed ground). Used literally for burial grounds since medieval times, and metaphorically since the 1900s for places where things go to 'die' or be abandoned.
We call abandoned junkyards 'graveyards' (like 'car graveyards' or 'electronics graveyards') because they're filled with the 'corpses' of dead machines—language borrows the sadness of real graveyards to describe any place of endings.
Complete word intelligence in one call. Free tier — 50 lookups/day.