Webster's English Dictionary

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humerus

hu.mer.us \'hyu:m-(*-)r*s\ \'hyu:-m*-.ri-, -.re-\ n or hu.meri [NL, fr. L, 
   upper arm, shoulder; akin to Goth arms shoulder, Gk o-m] pl os : the long 
   bone of the upper arm or forelimb extending from the shoulder t o the elbow