1. A cemetery or graveyard. I refuse to walk through a boneyard at night—all the graves just creep me out.
2. A place where old, unused things accumulate. A: "It looks like our neighbors' lawn has become a boneyard." B: "Yep, everything there has five layers of rust!"
boneyard
1. n. a cemetery. I’d like to be planted in a boneyard like that.
2. n. a junkyard. (From sense 1) This old car’s ready for the boneyard.