From Longman Dictionary of Contemporary Englishshoulder bladeˈshoulder blade noun [countable] HBHone of the two flat bones on each side of your back
Examples from the Corpus
shoulder blade• Gobbets of pinkish-grey matter exploded from the exit wound below the right shoulder blade.• Place only the fingertips on the shoulder blade.• Rotating skin on the shoulder blade 6.• Do not press on the spine or the shoulder blade itself. 