Origin: altered (by assoc. with loon) < earlier loom < ON lomr < IE echoic base *lā- > L latrare, to bark
Origin: Scot lown, loun < ME lowen < ? or akin to MDu loen
See loon in American Heritage Dictionary 4
Origin: Perhaps alteration of dialectal loom, guillemot, diver
Origin: , from Old Norse lōmr.
Origin: Probably from loon1 (from its loud cry)
Origin: and influenced by lunatic.
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