del·toids
noun/ˈdeltɔɪdz/
/ˈdeltɔɪdz/
(also informal delts
[plural] (anatomy)/delts/
/delts/
)- the thick muscles that are triangular in shape and cover the shoulder joints
三角肌（覆盖于肩关节） Word Originmid 18th cent.: from French deltoïde, or via modern Latin from Greek deltoeidēs.