ELL. A measure of length. In old English the word signifies arm, which sense it still retains in the word elbow. Nature has no standard of measure. The cubit, the ell, the span, palm, hand, finger, (being taken from the individual who uses them) varies. So of the foot, pace, mile, or mille passuum. See Report on Weights and Measures, by the Secretary of State of the United. States, Feb. 22, 1821; Fathom.