Meaning

noun a prehistoric megalithic tomb typically having two large upright stones and a capstone

noun a hussar's jacket worn over the shoulders

noun a woman's cloak with dolman sleeves

originBorrowed from French dolmen. Perhaps incorrectly fabricated from Breton taol maen (taol (“table”) + maen (“stone”)) (the correct compound would be *taolvaen, not **daolmaen). An alternative theory states the French term derives instead from Cornish tolmen, from toll (“hole”) + men (“stone”); compare the name of the Cornish standing stones Men an Toll. See also menhir.

Etymology from Wiktionary, CC BY-SA 3.0