lagman noun2 •(historical) In medieval Scandinavia and parts of the Danelaw: a district official, magistrate or judge; a lawspeaker.There was a succession of thirty-eight lagmans, which continued till 1262, when the republic [the Icelandic Commonwealth] was destroyed by the Danes. — 1788 •(historical) The presiding justice of the supreme court; a lawman. formslagmans