U / ulna
noun

ulna

gen. ulnae · gender feminine · decl. 1st
Gr. ὠλένη; Goth. aleina; Germ. Elle; cf. Ellenbogen; Engl. ell
the elbow
the elbow.
Lit., Plin. 11, 43, 98, § 243.—
by extension
the arm poetic
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.
As a measure of length.
As a measure of length.
An ell
An ell, Verg. E. 3, 105; id. G. 3, 355; Hor. Epod. 4, 8; Ov. M. 8, 748. —
a fathom
As much as a man can clasp with both arms, a fathom, Plin. 16, 40, 76, § 202.