I.the elbow.
I. Lit., Plin. 11, 43, 98, § 243.—
II. Transf.
A. Poet., in gen., the arm: “tremula patris dormientis in ulnā,” Cat. 17, 13; Prop. 2, 18 (3, 10), 9; Ov. M. 7, 847; 9, 652; 11, 63; Luc. 3, 664; Sil. 3, 457; 10, 499; Stat. S. 5, 3, 266 al.—
B. As a measure of length.
2. As much as a man can clasp with both arms, a fathom, Plin. 16, 40, 76, § 202.