ELL

I. noun Etymology: Middle English eln, from Old English; akin to Old High German elina ~, Latin ulna forearm, Greek ōlenē elbow, Sanskrit aratni Date: before 12th century a former English unit of length (as for cloth) equal to 45 inches (about 1.14 meters), II. noun Etymology: alteration of 1el Date: 1773 an extension at right angles to the length of a building, an elbow in a pipe or conduit