ulna
/ˈʌlnə/noun
(pl. ulnae /-niː/ 或ulnas)
1- the thinner and longer of the two bones in the human forearm, on the side opposite to the thumb（人）尺骨。比较RADIUS（义项2）。
1.1
- the corresponding bone in a quadruped's foreleg or a bird's wing（鸟, 兽）尺骨。
派生词
ulnar
adjective词源
late Middle English (denoting the humerus)： from Latin; related to ELL1.