deltoid
noun [ C ] anatomy specialized uk/ˈdel.tɔɪd/ us/ˈdel.tɔɪd/ (also deltoid muscle)
（肩上的）三角肌
a muscle in the shoulder, shaped like a triangle and used for lifting the arm
Always stretch your deltoids after lifting weights. 提举重物以后一定要舒展一下三角肌。
The deltoid muscle lifts the arm sideways. 三角肌使手臂能够侧举。
deltoid
adjective anatomy specialized uk/ˈdel.tɔɪd/ us/ˈdel.tɔɪd/
三角形的
shaped like a triangle
a deltoid ligament 三角韧带