shoulder blade
US /ˈʃoʊl.dər bleɪd/
UK /ˈʃoʊl.dər bleɪd/

1.
肩甲骨
either of the two large, flat, triangular bones at the top of the back, below the neck, that connect the upper arm bone to the collarbone
:
•
He felt a sharp pain in his left shoulder blade.
彼は左の肩甲骨に鋭い痛みを感じた。
•
The massage therapist worked on the knots in her shoulder blades.
マッサージ師は彼女の肩甲骨の凝りをほぐした。