Proto-Indo-European root meaning "elbow, forearm." It forms all or part of: elbow; ell (n.1) unit of measure; uilleann; ulna.

It is the hypothetical source of/evidence for its existence is provided by: Sanskrit anih "part of the leg above the knee;" Greek ōlenē "elbow;" Latin ulna, Armenian uln "shoulder;" Lithuanian alkūnė "elbow;" Old English eln "forearm."

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